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ThesisItem Open Access Studies on certain chemical constituents of banana leaves in relation to incidence of leaf spot diseases. A note on the fungi occurring on banana(Division of Plant Pathology ,Agricultural College and Research Institute ,Vellayani, Trivandrum, 1966) Chandrasekharan Nair, M K; KAU; Sam Raj, JThesisItem Open Access Cyto-morphological studies on C2, C3 progeny of the cross between C2 tetraploid and diploid of sesame (Sesamum indicu L. )(Division of agricultural botany, Agricultural College & Research Institute Vellayani, Trivandrum, 1966) Kumara Pillai, P; KAU; Balachandran, PThesisItem Open Access Cyto-morphological studies on C2, C3 progeny of the cross between C2 tetraploid and diploid of sesame (Sesamum indicum L.)(Division of agricultural botany, Agricultural College & Research Institute Vellayani, Trivandrum, 1966) Balachandran, P; KAU; Kumara Pillai, PThesisItem Open Access Studies on the effect of fertilizers on the growth, yield and quality of oil of citronellla(Division of Agronomy, Agriculture college and research institute Vellayani , Trivandrum, 1966) Ravindranathan Pillay, G; KAU; Madhavan Nair, KThe present investigation was undertaken at the agriculture college and research institute , Vellayani during 1964-66 to study the influence of fertilizers on growth yield and quality of oil in citronella.The effect of nutrients nitrogen and potach at three level each and phosphorus and calcium two levels each were studied in a mixed confounded factorial experimnt , in randomised Block design.ThesisItem Open Access Studies on the performance of five varieties of cowpea (Vigna sinencis Savi.) and their response to nitrogen and phosphate fertilization(Division of Agronomy, Agricultural college & reseach institute Vellayani, Trivandrum, 1966) Ravindran Nair, R; KAU; George, C MA field experiment was laid out in the farm attached to the agricultural college and research , Vellayani, during 1965-66 to study the effect of nitrogen and phosphate fertilization on five varieties of cowpea and to determine the best variety, suited to the local conditions . The varieties tried were , new era, M.S .9314, African, C4 and the local. The fertilizer treatments comprised two levels of nitrogen , vis, 0,30,60 and 90 kg./ha.ThesisItem Open Access Study of differential adoption of improved farm practices in relation to reference group influence and community norms(Faculty of the Post Graduate School, Indian Agricultural Research Institute, New Delhi, 1966) Sankaran Potti, V S; KAU; Sharma, S KThis research study, entitled "A study of differential adoption of improved farm practices in relation to reference group influence and community norms" was conducted during the period 1964-1965 in Khanjawala block in the Union Territory of Delhi. The objectives of the study have been: (1) To study adoption of farm practices as a function of reference group influence. (2) To find out the composition of reference groups which influence adoption behaviour. (3) To study the influence of community innovativeness norms on individual innovativeness. (4) To study the extent to which community innovativeness norms are related to other community characteristics. Three villages, out of the total of fifty six villages in Khanjawala block, representing three different types of community as social system norms, namely, modern, transitional and traditional were selected for the study. The respondents of the study constited of 222 farmers representing the total number of heads of farming families residing in these three villages.ThesisItem Open Access Sulphur status of Kerala soils(Division of Agricultural Chemistry, Agricultural College and Research Institute, Vellayani, 1966) Jacob, C I; KAU; Subramoney, NA study was made of the forms and distribution of the sulphur in fourteen wet land and six dry land profiles. Relationship between different forms of sulphur and organic carbon was worked out. The main findings are as follows:- 1. Kerala soils in general are rich in total sulphur 2. Wet land soils contain more sulphur than dry land soils. 3. Total sulphur is significantly and positively correlated with organic carbon for all the three layers. 4. Maximum reserves of sulphur are found in the Kari soil of Kuttanad. 5. Excepting the Kari soils, in general the total sulphur decreases with an increase in the depth of the profile.ThesisItem Open Access Comparative study on X4 mutants of cowpea (Vigna sinensis L. Savi.) with reference to quantitative characters(Division of Agricultural Botany, Agricultural College & Research Institute, Vellayani, 1966) Natarajan, E N; KAU; Kumara Pillai, PThis thesis embodies the results of an investigation carried out in the Division of Agricultural Botany of the Agricultural College and Research Institute, Vellayani during the year 1965-66 to study the behaviour of X4 mutants of cowpea (Vigna ainensis L. Savi) with reference to certain quantitative economic characters. Eight mutant types selected from X3, along with the orginal (African) variety as control were raised in plots which were statistically laid out and replicated. The X4 mutants were compared among themselves as well as with the control with a view to isolate the economic types possessing desirable quantitative characters.ThesisItem Open Access Potash nutrition of rice with regard to the effect of Calcium, Magnesium and Silicon(Division of Chemistry, Agricultural College & Research Institute, Vellayani, 1966) Usha, C; KAU; Verghese, E JThe study of potash nutrition of rice for maximum economic yields of grain and straw of high quality has not so far received adequate attention. In recent years, however, the use of potash in rice production has made remarkable progress in Japan and in India. But sufficient data are not yet available with regard to the need for potash manuring of Rice in Kerala. It is well known that rice soils of Kerala are very poor in lime status due to high rainfall obtained in the State. It has been found that liming affects the available potash contents in the soils.
