eChapters

21.1. What?

Harvest is the process of gathering the end produce from mature crops in the fields. Harvest marks the end of the growing season, or the growing cycle for a particular crop. Harvesting is the most labour-intensive activity. Moreover, timely harvest before shattering of the produce or before rain assumes significance. As adjacent fields sown at the same time come to harvest simultaneously, farmers face great problem in getting manual labour for harvesting and cleaning their produce. To overcome these difficulties, different types of harvesters have been developed from time and again to suit different crops, situation and conditions.

21.2. Harvester and reaper

Harvesters are used to cut the crop after they mature. In such cases, threshing is to be done separately. Harvesters are available for a wide range of crops belonging to cereals, pulses, millets, oilseeds, fruits and plantation crops. Reapers are used to harvest crops such as rice, wheat, soybean, mustard, rapeseed, safflower and other thin stemmed crops. Reapers are operated using power tiller.

Introduction

Harvesting and handling are the equally important activities as the entire production system as an individual activity. Therefore, proper harvesting and handling is essential to assure the farm income. There are various factors which directly affect the storage life of fruits and vegetables as below. The natural limits to the post -harvest life of all types of fresh produce are severely affected by other biological and environmental conditions.

Temperature: An increase in temperature causes an increase in the rate of natural respiration of all produce and food reserves and water content become depleted. The cooling of produce will extend shelf-life by slowing the rate of respiration.

Transpiration and water losses: High temperature, low humidity in the store and injuries to produce can greatly increase the loss of water from stored produce beyond that unavoidable lost from natural causes. Maximum storage life can be achieved by storing only undamaged produce at the lowest temperature tolerable by the crop and at the relative humidity appropriate for the produce.

Mechanical damage: Damage caused during harvesting and subsequent handling (i.e. injuries, impact bruising) increase the rate of deterioration of produce and renders it liable to attacks by decay organisms even under refrigerated storage. Mechanical damage to root crops will cause heavy losses owing to bacterial decay and must be remedied by curing the roots or tubers before storage. Curing is a wound –healing process.

Decay in storage: Decay of fresh produce during storage is mostly caused by the infection of mechanical injuries provoked by micro organisms, mostly bacteria and fungi. Furthermore, many fruits and vegetables are attacked by decay organisms which penetrate through natural openings or even through the intact skin. These infections may be established during the growth of the plant in the field but lie dormant until after harvest, often becoming visible only during storage or ripening.

After doing all hard work during fruit production the last operation is harvesting on field. Though it is last operation, it should be done very carefully to get the quality harvest. Harvesting of fruits mainly depends upon the nature of fruit. Here nature refers to the classes of fruits divided on the basis of their respiratory pattern and ethylene production. On the basis of the respiratory pattern the fruits can be divided in to two categories, first one is climacteric and the second one is non climacteric.

1. Climacteric fruits: The meaning of word „climacteric is a critical period or event. Here, climacteric refers to the event of respiratory rise before the ripening phase. Those fruits which show such patterns are known as climacteric fruits (Taiz and Zeiger, 2002) Examples: Mango, guava, apple, banana, sapota, papaya, peach, pear, plum, fig, Annona.
2. Non climacteric fruits: Non climacteric fruits do not exhibit the respiration and ethylene production rise (Taiz and Zeiger, 2002). Examples: Citrus, grapes, pineapple, pomegranate, litchi, ber, jamun, cashew, cherry, strawberry.

4.1 Harvesting

Pomegranate being non-climacteric fruits should be picked when fully ripe. Its fruits become ready for picking 120-130 days after fruit set. Mature fruits should be immediately removed from the plants as delay in harvesting leads to fruit cracking. Fruits harvested at a premature stage have poor keeping quality and are prone to damage during handling and transport. The fruits are harvested when outer rind becomes yellowish and the fruit when tapped produces a metallic sound. The round fruits become flattened from all the sides and basal beak shaped portion shrinks at the time of maturity. Fruits are harvested with the help of secateurs by retaining 1 cm stalk with the fruit. All the fruits should be harvested in 2-3 pickings within a span of one month.

Standard Operating Protocol for Export of Banana
Banana is one of the important fruit grown in India, as far as its export is concerned it is very limited which is below 1%. For export market it should be harvested at 85% maturity or the bunch is ready to harvest in 80-82 days after shooting initiation. Bunches are to be harvested carefully with two people. One person cut the hand and another person put the bunch onto the padding shoulder. Bunches should be slant cut with sickle shaped sharp knife free from any contamination. For export purpose banana fingers should be square, lie close together, hard, clean and free from any infestation and mucilaginous thread of pulp should be 4-5 cm in length. Skin should not be separated from pulp and no brown spot under the skin. De-handing must be done with sharp chisel type de-handing tool, by leaving maximum crown attached to the hand. The crown should be cut evenly; otherwise its outer finger may be detached. Other way to De-handing by using the nylon thread. It is easy method and it allows maximum crown attach with the land with minimum latex flow. The hands should be carefully paced in clean water which has alum 1 gm litre-1 or sodium hypochlorite (200 ppm) as surfactant for removing the latex and killing the micro-organism after that fruit must be packed in 20-25 kg capacity crates having foam in bottom and in between hands also. The most effective control of post harvest diseases and control of ripening of banana is treating the hands with 1.0% CISH METWASH an organic formulation for 30-60 seconds after that it should be carefully removed from this organic formulation and keep it in front of high speed fan for drying.

Harvesting: “Removal of entire plant or economic parts after maturity from the field" is called harvesting. It includes the operation of cutting, picking, plucking or digging or a combination of these for removing the useful part or economic part from the plants / crops. The portion of the stem that is left in the field after harvest is called as stubble. The economic product may be grain, seed, leaf, root or entire plant.

Harvest Index: (H.I): It is the ratio of the economic yield to the total biological yield expressed as percentage.

H.I = Economic yield / Biological yield x 100

Time of Harvesting: If the crop is harvested early, the produce contains high moisture and more immature ill filled and shriveled grains. High moisture leads to pest attack and reduction in germination percentage and impairs the grain quality.

Late harvesting results in shattering of grains, germination even before harvesting during rainy season and breakage during processing.

Post-Harvest Losses

A post-harvest loss is defined as the measurable qualitative and quantitative food (including fruits and vegetables) loss along the supply chain, starting at the time of harvest till its consumption or other end uses (Hodges et al., 2011). Pineapple fruits are highly perishable in nature and continuously respired even after harvesting which limited its shelf-life leading to the storage problems (Hossain and Bepary, 2015) and decline in production due to post-harvest losses (Babalola et al., 2008). During the storage for distant marketing, pineapple fruits easily losses its moisture content through transpiration and become more susceptibility to microbial spoilage (Hossain and Bepary, 2015). In India the top five leading pineapple producing states are West Bengal, Assam, Karnataka, Meghalaya and Manipur (Anonymous, 2018). The measurable qualitative and quantitative losses of pineapple at post-harvest level are from the various stages of handling from the farm level up to the consumers (Table 1 and 2).

Historically, humans have utilized animal skins for various purposes including shelter, clothing, weapons, and food containers. In contemporary times, skins and hides significantly contribute to foreign exchange earnings within the animal husbandry sector and are widely employed by the leather industry. At slaughterhouses, hides and skins are generally collected and dispatched to tanneries on the same day. If a tannery is not in close proximity, hides are preserved through salting or curing prior to being transported in batches.
A skin (the outer covering) from a fully grown large animal is termed a hide; it is comparatively large, thick, and heavy, typically exceeding 30 lb (13.62 kg) for cattle or buffalo. Conversely, the outer covering of smaller animals such as sheep, goats, pigs, and young calves is known as skin. This type is smaller, thinner, and lighter. The term “slunk” refers to the skin of an unborn calf, which is often utilized for parchment, light suede, or drum skins. Calf skin is derived from young calves that have not yet reached maturity, and it is generally softer and more delicate than the hides of older animals. Its fine texture renders it highly sought after for premium leather goods. In contrast, kip skin is obtained from older but still immature calves. It is thicker and more robust than calf skin while being more refined than adult hides. Kip skin is recognized for its blend of durability and softness, making it ideal for longlasting leather products.
Hides and skins constitute approximately 4-11% of an animal’s live weight, influenced by factors such as species, age, breed, and health. In cattle, the average hide yield is about 7% of live weight, whereas in sheep and goats, the average skin yield is around 11% of live weight. Hides and skins rank among the most valuable by-products of animals and are transformed into leather through the tanning process. The trimmings are repurposed for the production of glue, artifacts, or as feed supplements.

Harvesting and processing natural honey are integral parts of beekeeping that demand attention to timing, technique, and ethical practices to protect both the integrity of the honey and the well-being of the bees. In natural farming systems, the emphasis lies not only on honey yield but also on maintaining balance with the surrounding environment and the bees themselves. Natural honey is prized for its pure quality, medicinal benefits, and nutritional richness, which can only be safeguarded through traditional, low-intervention approaches. The central objective is to harvest only the surplus honey, ensuring colonies retain sufficient reserves to sustain themselves through adverse seasons.

Honey is usually harvested after the flowering season, once nectar flow has been abundant and bees have stored ample honey for their use. A key tenet of natural beekeeping is to avoid stripping the hive entirely of its reserves, thereby safeguarding the colony’s survival. Mature honey is collected from capped combs, which signal that the honey has reached the correct moisture content. In contrast to commercial methods that may rely on chemicals or excessive smoke to drive bees away, natural beekeeping encourages gentle handling using a bee brush or a small amount of smoke to move bees without causing them distress.

The vegetable seed production in India work on the principle of buy back or contract farming where the production agent or organizer distribute the plots of seed production to growers. The grower is responsible for the rising of seed crop till harvesting or pre-conditioning. The organizerguides the growers regarding the plant protection, roguing and pre-conditioning. The harvesting is entirely a responsibility of the grower but facility for pre-conditioning may be established by the seed organizer. The seed pre-conditioning includes activities like acid treatment on wet seed bases or operations which make seed ready for procurement. After the harvesting or pre-conditioning the seed will be procured by the organizer and head for the processing yard for grading & packaging.

2.1 Harvesting and Pre-conditioning

The methods of harvesting and pre-conditioning various with crop to crop. There are mainly two types of vegetables in terms of type of harvesting.

Harvesting and threshing are the key most important operations in the entire range of field operations required in any crop production system. Both of these operations remain still the most important operations as fruit of labour depends upon them. Crops are harvested after normal maturity with the objective to take out grain, straw, tubers etc without much loss.  It involves cutting / digging/ picking, laying, gathering, curing, transport and stacking of the crop.  Harvesting of major cereals, pulse and oilseed crops are done by using sickle whereas tuber crops are harvested by country plough or spade (Fig. 8.1).

7.1 Harvesting and threshing equipment for cereal crops

Harvesting and threshing is an important operation in the farming. This can be done either manually or with the help of power operated machinery. Harvesting of field crops continues to be one of the most labour intensive operations in agricultural production system. Harvesting of crop is generally done by hand using sickle in India. Power operated harvesting machinery has not caught up with Indian farmers because of limited size of land holdings, economic constraints and non-uniformity of field conditions. Manual harvesting with different hand tools continues to be dominant, which takes 170-200 man-hours to harvest one hectare of paddy crop. Due to high labour demand at the time of harvesting, the operation continues for weeks together, resulting in over drying of crops in the field causes grain losses to the extent of 5 to 15 percent and even results in loss of crop due to untimely rain during harvesting. Mechanical devices to harvest wheat and paddy crops have become popular especially in northern India to minimize the field losses resulting from shattering, unfavourable weather conditions and pilferage.

Removal of entire plants or the economic parts after maturity from the field is called harvesting. Portion that is left behind on the field is known as stubble. The economic product may be grain, seed, leaf, root or entire plant.

Time of Harvesting

If the crop is harvested early, the produce contains high moisture and more immature grains. The yields will be low due to unfilled grains. It is very difficult to store the produce as shriveled grains with high moisture are highly prone to infestation by pest. The quality of the grain as well as germination percentage is also reduced. Late harvest results in shattering of grains, germination even before harvesting in rainy season and breakage during processing. Hence harvesting during correct time is very important.

Plants may be harvested at physiological maturity or harvest maturity. Plants are said to be in physiological maturity when the translocation of the photosynthates ceases to the economic part.

Harvesting is the act of removing crop from where it was growing and moving it to a more secure location for processing and storage. Some root crops and fruits trees can be left in the field or orchard and harvested as needed, but most crops reach a period of maximum quality that is they ripen or mature and will deteriorate if left exposed to the elements. While the major factor determining the time of harvest is the maturity of the crops and other factors such as weather, availability of harvest equipments, packing, drying, transport and storage facilities.

Economic and marketing issues are often even more important to consider when to harvest commodity. Before harvesting of crop, grower must be sure about demand of the produce.

Harvesting the crop at optimum maturity is critical for reaping the benefits of season long efforts on crop production. After final decision on crop maturity, care must be taken to avoid losses during harvest, threshing, transport and storage. Processing is equally important to keep the produce in good condition for realizing good price.

Crop maturity: There are different types of maturity namely physiological maturity, harvest maturity and storage maturity.

Physiological maturity: It is the stage of development in the life cycle of plant when the plant reaches maximum dry weight. At this stage any further increase in inputs does not produce any gain in yield. There is cessation in growth and grain filling at this stage. Grain at this stage has 40 per cent moisture and 90 per cent produce is matured and this remaining 10 per cent still immature. So farmers should harvest at stage to get maximum benefit.

Harvesting is the process of gathering mature crops from the fields. The timing of the harvest is crucial, as it directly affects the quality and yield of the crop.

Here are Some key Aspects Related to Harvesting Crops

Maturity: Crops need to be harvested when they reach their optimal level of maturity. This varies depending on the type of crop. For example, fruits and vegetables are usually harvested when they are fully ripened, while grains are typically harvested when they reach physiological maturity but before they start to shatter or lose quality.

Methods of Harvesting

Manual Harvesting: In some cases, crops are still harvested by hand. This is common for fruits, vegetables, and certain grains. Manual harvesting requires a significant amount of labor but is often necessary for delicate crops.

2. METHODS OF HARVEST

The seed can be harvested either manually or mechanically. In mechanical harvesting, single harvest is possible, but care should be taken to avoid mechanical injury. In manual harvesting, crops can be harvested either as single harvest or as periodical harvest. The crops having continuous flowering habit are to be harvested in different harvests/ pickings.

2.1. Manual harvesting

Harvesting any crop can be done manually. Manual harvesting is done by the hand of harvest worker. Multipicking in pulses and vegetables is done by manual methods.

I. FILL UPS

1. The type of harvest in paddy is _____.
2. The type of harvest in cumbu is _____.
3. The type of harvest in bhendi is _____.
4. The type of harvest in brinjal is _____.

It is the operation of cutting, picking, plucking and digging or a combination of these operations for removing the crop from under the ground or above the ground or removing the useful part or fruits from plants.

Thresher is a machine to separate grains from the harvested crop and provide clean grain without much loss and damage. During threshing, grain loss in terms of broken grain, un-threshed grain, blown grain, spilled grain etc. should be minimum. Bureau of Indian Standards has specified that the total grain loss should not be more than 5 per cent, in which broken grain should be less than 2 per cent. Clean un-bruised grain fetch good price in the market as well as it has long storage life.

It is a machine designed for harvesting, threshing, separating, cleaning and collecting grains while moving through standing crops. Bagging arrangement may be provided with a pick up attachment. The main functions of a combine are: (i) Cutting the standing crops (ii) Feeding the cut crops to threshing unit (iii) Threshing the crops (iv) Cleaning the grains from straw (v) collecting the grains in a container.

Kewda plant occurs wild in the entire coastal belt of Odisha , but abundant in Chhatrapur and Keluapalli areas of Ganjam district. There were about 3-4 lakhs trees of kewda in Ganjam district (Deshaprabhu, 1966). Main season of flowering starts from July-August and lasts for 2-3 months and a few flowers also come during November-December and March-May (Haines, 1961). Averagely, a plant produces 15-20 flowers per season depending on branching of the tree (Plate 32). A fully matured tree bears 30-40 spadices in a year (Deshaprabhu, 1966). Flowering is also dependant on rainfall, being better in years of high rainfall. Size of flower is bigger during rainy season. The spadices take a fortnight to mature, depending upon the weather condition. Ripe spadices, creamy in colour, give higher yield of perfume and of better quality than immature ones (Plate 33). The kewda flower of Ganjam district is also registered under the geographical indications (GI) of goods (Registration and Protection) act (Panigrahy, 2019).

In the vast array of terrestrial organisms, the human species is commonly regarded as possessing a distinctive and elevated status owing to its faculty for moral discernment. This faculty encompasses the capacity to adapt to diverse environmental conditions, adeptly navigate complex circumstances, demonstrate comprehension, exercise authoritative control, and effectively tackle arduous tasks through the assimilation and judicious application of prior experiences. Termed intelligence, this quality is observed to manifest across a spectrum of degrees among individuals.

Social psychology, as previously elucidated, endeavors to delineate the nature of social behavior. Social behavior encompasses four fundamental types of interactions

i) When individuals encounter one another, mutual reactions occur. Each individual influences the other, and reciprocally, they are influenced by each other’s presence.

ii) Individuals may elicit responses from groups, such as when an extension worker interacts with a gathering of farmers.

iii) Conversely, groups collectively respond to individual members, as exemplified by a group’s reaction to its leader during a meeting. iv) Interactions extend to intergroup dynamics, where one group of individuals reacts to another group.