eChapters

Q.1 The most fundamental assumption to be followed by random variable for using the standard method (parametric statistic) or parametric inference is that the random variable follows normal distribution.

Q.2 The standard parametric techniques are not useful for estimating parameters and testing hypothesis about them.

Q.1 In addition to the assumption of ANOVA, the other point which is given due consideration by the statistician is “The stability of variance.”

Q.2 In any investigation, if it is possible to incorporate the “randomisation procedure” then it is customary to rely on “ Randomisation” to break up any “correlation among experimental errors”

Q.1 In random effect model, the treatments are taken as a random sample of treatments drawn from a large group of T treatments.

Q.2 In varietal trials for plant breeding or genetics, the appropriate statistical model is not the random effect model.

Q.1 Analysis of covariance is an extension of ANOVA.

Q.2 In an ANCOVA technique, observations are taken on more than one variable from each experimental unit.

Q.1 The replicated experiment designed to compare a number of parent plants w. r. to some attribute under study is known as “Progeny row trial?

Q.1 Let there be two factors A and B with p and q levels respectively which are applied to the larger strip by dividing the experimental material into p rows and q columns. The factors A and B are applied at random to these rows and columns respectively. Such a layout is known as strip plot design.

Q.1 If two type ot factors, say (A & B) have to be studied in the same experiment where A requires larger plot size and B requires smaller plot size and structure of the experiment is that of plots within blocks and blocks within replication then such layout is known as split plot design.

Q.1 Factorial experiment is not a design.

Q.2 In factorial experiment, all possible combinations of two or more than two factors are not considered

Q.1 We can apply the change of origin or change of scale or change of origin and scale both to the original data in case of applying ANOVA technique to make the analysis easy and speedy.

Q.2 The conclusions drawn from ANOVA based on transformed data or original data are different.

Q.1 According to prof. R. A. Fisher “ANOVA” is not the separation of variance assignable to one group of causes from the variance assignable to another group of causes.

Q.2 The basic purpose of ANOVA technique is to test the homogeneity (equality) of several means.

Q.1 An experiment is a means of getting an answer to the question which arises in the mind of an experimenter (reseacher).

Q.2 An experiment may be planned for not to compare the yield of several varieties of wheat.

Q.1 A sampling procedure in which the units are selected with probability proportional to their some size measure, is known as sampling procedure with probability proportional to size (P.P.S.) Notations: Let there be a population of N units say Yi , (i = 1,2, ......... N), YN with their selection probabilities Pi (i=1, 2........... , N). Here Pi ? Pj V i ? J. = 1, 2, .............. N. Let yi , (i = 1, 2, ...................n) be the sample drawn from the population with probability of selection pi (i = 1, 2 -, n).

Q.1 Cluster sampling restricts the spread of sample over the population which results generally in increased sampling variance of estimators under considerataion.

Q.2 In adopting cluster sampling, few selected clusters are enumerated partially.

Q.1 Informations available on an auxiliary variable X which is highly correlated with the study variable y, can be utilized in improving the sampling design for the study variable y.

Q.2 Information on auxiliary variable X can be used for stratification of population for the study character y.

Q.1 Systematic random sampling or systematic sampling, both are different sampling schemes.

Q.2 The pattern usually followed in selecting a systematic sample is a simple pattern involving a constant spacing of units in the sample.

Q.1 In the theory of cluster sampling, if the population is divisible into smallest, distinct and identifiable units then this smallest unit is known as elementary unit (element) of the population.

Q.2 A group of elementary units in context of sample survey theory is known as cluster.

Q.1 If the sampling units of the population are of heterogeneous nature then stratified random sampling scheme is suitable for sample survey to be conducted.

Q.2 In stratatified random sampling scheme, the strata are homogeneous within themselves but heterogeneous between themselves.

Q.1 SRSWOR scheme is better (more efficient) them SRSWR scheme.

Q.2 The sampling variance of sample mean under SRSWOR scheme is more than that in SRSWR scheme.

.3 The sample variance s2 is an unbiased estimate of population M.S. (S2 ) in case of SRSWOR scheme.

In this chapter some preliminary terminologies have been provided which are very much useful and frequently used in dealing with the theory of sample surveys and its application.

Zantedeschia aethiopica (L.) Spreng. (syn. Calla aethiopica L.) (Araceae): Eng.- Arum Lily; Hindi – Iram sousan [NI]. A rhizomatous perennial, suitably planted in moist and shaddy situations and under green house conditions.

Youngia tenuifolia (Willd.) Babc. & Stebb. (Asteraceae): Ladakhi– Neu [W]. A perennial herb of high altitude cold arid areas.

Xanthium strumarium L. (Asteraceae): Eng.- Common Cocklebur; Kash.- Tcheere [W]. An annual herb usually inhabiting disturbed soils. Leaves simple, alternate. Flower heads are borne in leaf axils and have disc florets only.

Waldhemia glabra (Decne.) Regel. (Asteraceae): Eng.- Smooth Ground Daisy [W] A tufted mat forming, aromatic high altitude plant of drier areas of Kashmir Himalaya at 4000-5000 m altitudes. Leaves wedge shaped and bluntly 3-5 lobed, occur in rosettes. Flower heads solitary on stems, pink to purple ray florets, disc florets yellow. Whole plant used for rheumatism.

Vaccaria hispanica (Mill.) Rauschert. (Syn. Saponaria vaccaria L.) (Caryophyllaceae): Eng.- Cow Soapwort/ Cow Basil [W]. Annual herb,as weed of orchards.Plant has blue-grey, waxy herbage and pale pink flowers. Used traditionally to relieve body swellings.

Ulmus parvifolia Jacq. (Ulmaceae): Eng. – Chinese Elm; Ladakhi Shampoo Tree / Yumbuk [W]. A small to medium deciduous tree growing upto 12 m tall, across the region as a temperate woody element. Leaves leathery, toothed and lustrous green. Trunk has a handsome, flaking bark of mottled greys with tans and reds. Also used as a landscape tree. In Ladakh the bark of the plant used as shampoo to promote hair growth.

Tagetes erecta L. (syn. Tagetes patula L.) (Asteraceae): Eng.- French Marigold; Hindi- Genda / Gule jafre; Kash.- Jaffre / Bata poshe [NI]. A herbaceous annual, naturalized in N W Himalayas and grown for border as well as bedding plant. Both double and single forms are cultivated. Double forms are golden yellow and carnation like

Sagittaria sagittifolia L. (Alismataceae):Eng.- Old World Arrow Head; Hindi- Chotakut; Kash.- Kyou [W]. Perennial herb inhabiting shallow water ponds, swampy rice fields. Leaves arrow shaped. Flowers have small sepals and three white petals, numerous purple stamens.Tubers edible (Figs. S 1, 2).

Rabdosia rugosa (Wallich ex Benth.) Hara (Lamiaceae): [W]. An erect branched leafy shrub or under-shrub growing as high altitude shrub above 2000 m altitudes on alpine slopes.Leaves ovate, wrinkled, hairy, coarsely toothed, conspicuously grey-woolly beneath, in contrast to green wrinkled upper surface. Flowers tiny, fragrant, white, spotted with purple. Shrub is of great significance for honey bee colonies.

Quercus baloot Griffith (Fagaceae): Eng.- Holy Oak; Kash.- Jamal Gota/ Baloote Kashmir [W/UC]. A small rounded evergreen tree. Leaves are coriaceous, oblong-ovate to lance shaped, entire or with spiny -toothed margins. Acorns oblong-ovoid to nearly rounded, solitary or in groups of 2 or 3. Grows as a hard wood element of forests. Also grown as ornamental.

Paeonia emodi Royle. (Paeoniaceae): Eng.- Himalayan Paeony; HindiUdsalap; Kash.- Mamekh [W]. A shurby perennial, found in W. Himalayas from Kashmir to Kumoan at 2400- 3300 m altitudes. Flowers yellowish white with a bunch of orange-yellow stamens.

Ocimum basilicum L. (Lamiaceae): Eng.- Sweet Basil; Hindi- Ban tulsi; Kash.-Baber [RC]. A cultivated aromatic herb grown for its seed. Flowers showy, light blue, fragrant. Leaves used for flavouring purposes. Seeds used for preparing refreshing drinks/ sharbats.

Nandina domestica Thunb. (Berberidaceae): Eng.- Chinese Sacred Bamboo [NI]. An evergreen or semi-evergreen ornamental shrub with upright shoots. Leaves mostly bi-to tripinnate, rich green purple on fall. Flowers star shaped, white with large yellow anthers, in erect panicles followed by long lasting, spherical bright red fruit.

Magnolia aquilfolium (Pursh.) Nutt. cv. Orange Flame (Magnoliaceae) [NI]. An open suckering erect shrub. Leaves ovate to elliptic, spinytoothed, leaflets dark-green changing in colors during seasons. Flowers are yellow borne in densely clustered racemes in late March to mid April.

Laburnum anagyroides Med. (Fabaceae): Eng.- Golden Rain Tree [NI]. An upright, small sized ornamental tree with hairy, grey-green young shoots. Leaves dark- green above and grey-green beneath, having 3-elliptic-obovate leaflets. In late April to early May, produces bright yellow flowers in dense racemes

Kerria japonica var. pleniflora Witte. (Rosaceae): Eng.- Jew’s Mallow / Japanese Rose [NI]. A deciduous ornamental shrub with vigorous and upright green shoots; alternate, ovate, pointed, sharply toothed, bright green leaves; produces very attractive, solitary, pompon like, double yellow flowers in April.

Jaeschkea oligosperma Knobl. (Gentianaceae): Ladakhi- Tikta [W]. Annual herb, along scrubby alpine slopes of Ladakh. Leaves lanceolate, blunt. Flowers bluish to reddish purple. The plant is consumed raw as blood purifier.

Iberis amara L. (Brassicaceae): Eng.- Candy Tuft [NI]. Half hardy annual ornamental herb. Leaves light green, lanceolate. Flowers borne in corymbs of light fragrant flowers, ranging in colour from white through pink to red purple.

Halerpestes tricuspis (Maxim.) Hand maz. (Ranunculaceae): LadakhiChitaka [W] Annual herb of alpine zone of above 3500 m altitudes. Whole plant used as stomachic and for gastrointestinal problems.

Gagea lutea (L) Ker Gawl (syn. Gagea elegans Wall ex G Don.): (Liliaceae): Kash.- Koker neeje [W]. A bulbous perennial herb inhabiting open subalpine slopes and forming groups. Leaves narrowly lanceolate. Basal leaf single, angular flat, exceeds the inflorescence, lanceolate linear, longitudinally furrowed at base. Flowers solitary on long pedicles, tepals yellow.

Fagopyrum acutatum (Lehm.) Mansf. ex Hammer (syn. Fagopyrum cymosum (Trev.) Meissn (Polygonaceae): Eng.- Medicinal Buckwheat / Perennial Buckwheat; Hindi – Kutu; Kash.- Tsok Hakh [RC]. A tall branched, puberulous annual growing wild in Drasss, Kargil, Gurez areas at 2800 to 3300 m amsl. Leaves tri-angular; perianth white. Grains acutely 3- cornered.

Echeveria derenbergii DC (Crussulaceae): Eng.- Painted Lady [NI]. A succulent house plant and green house perennial grown for its succulent coloured leaves which are arranged in rosettes. The orange coloured flowers appear in July on raised stem branches

Dactylis glomerata L (syn. Bromus glomeratus (L.) Scop. (Poaceae): Eng.- Orchard Grass; Kash.- Dramun [W]. Perennial bunch grass,usually in dense shaded forest areas. A very important pasture and hay grass of temperate grasslands. Culms glabrous, erect. Inflorescences are erect panicles bearing spikelets in dense one sided clusters.

Cajanus cajan ( L ) Millsp. (Fabaceae): Eng.- Pigeon Pea / Cajan Pea; Hindi – Arhar; Kash.- Lokut Chana [RC]. An annual erect herb, stem woody, leaves trifoliate. Flowers yellowish diffuse red, borne in axillary racemes. Pods flattish with fawn brown coloured seeds having light yellow cotyledons. The pulse has been lately introduced and is under marginal cultivation.

Barbarea vulgaris var. taurica (DC) Hook. f. & Anders. (syn. Barbarea vulgaris R. Br.) (Brassicaceae): [W]. A herb of damp soils inhabiting water bodies. Flowers yellow. Leaves used for healing of frost bites.

Abelia grandifolia Villarreal (Caprifoliaceae): Eng.- Glossy Abelia; Kash.– Abeel [NI]. A vigorous, arching, medium sized semi-evergreen shrub commonly grown in gardens for hedging. Leaves ovate, short petioled, entire, dark glossy-green. Flowers born in axillary cymes and terminal panicles, slightly fragrant, produced over a long period from June to October; sepals 2-5; corolla funnel form, white tinged pale- pink.

Soil pollution is defined as presence of xenobiotics (e.g. chemical compounds, radioactive elements) that alters the soil properties viz., both chemical, physical and biological properties of soil. Soil pollution, including heavy metals, may be of natural origin, like volcanic eruptions, atmospheric lightning, animal excrements or ore leaching. Nevertheless, human activity and mostly chemical industry, mining and metallurgy, as well as municipal waste management and traffic emissions are the main source of environmental pollution.

The soils which owe characteristics that they cannot be economically used for the cultivation of crops without adopting proper reclamation measures are known as problematic soils. Different kinds of problematic soils viz., Physical, chemical and biological problematic soils exists and pose problems of crop production.

Water required for irrigation of cropped land is being degraded in terms of quantity and quality due to fast increasing demand for its use. Furthermore, the soil quality and crop productivity is linked to the quality of the water available for irrigation. In general, evaluation of irrigation water quality should focus on salt content, sodium concentration, the occurrence of nutrients and trace elements, alkalinity, acidity, and hardness of the water.

Geographic location of India is in Northern hemisphers and located between 80 4' & 370 6' N latitude and 640 7' & 970 25' E longitude. Extent of area is 329 M Ha or 329 x 104 Sq.Km or 3.29 MSq.Km. The physiography of India can be broadly grouped into triangular plateau, mountains, Indo-gangetic plains and islands. India is divided into twenty agro ecological regions and sixty five agro ecological sub regions as per NBSS and LUP. Agro ecological regions( AER) is referred to identification and demarcation of land units having comparable landform, soils, bioclimatic conditions and the length of growing period (LGP).

Soil is a dynamic, vital living natural resource. Soil health is the condition of the soil and its potential to sustain biological functions, maintain environmental quality, and promote plant and animal health. It is qualitative trait of soil. Healthy soil is the foundation for profitable, productive, and environment friendly agricultural systems.