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Birsa Agricultural University, Ranchi
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ThesisItem Open Access HETEROSIS AND COMBINING ABILITY STUDIES IN EARLY VARIETIES OF MAIZE(Birsa Agricultural University, 1988) RAI, Rama Shankar; GANGULI, D.K.Six open pollinated early maize varieties from diffe rent regions of our country comprised the base materials for the present investigation. The six varieties and their 15 's in a diallel set (excluding reciprocals) with an early check variety were grown in randomized block design under rainfed situation. The mean performance of parents and crosses and the expression of heterosis over mid-parent and better parent for nine characters were evaluated against the check variety through simple analysis of variance. The only variety A-76 (46.80 q/ha) significantly out yielded the check variety BALL-8041 (36.47 q/ha). Out of many significantly superior cross combinations over chock variety, J-2030 x BAU-7917(52.30 q/ha) was the best. Heterosis was studied in 15 F cross combinations. For most of the characters the average heterosis was positive. The range and extent of heterosis for important characters were substantive. Heterosis for grain yield was quite high. A diallel analysis of combining ability revealed pre dominant role of additive gene effects for days to silk and kernel rows/ear while other characters were predominantly controlled by non-additive gene action. The variety J-2030 was found to be best combiner for grain yield, ear length, kernel rows/ear and number of kornels/ear. Diara was good combiner for reduced maturity duration. The cross M-43 x Navin had the highest positive s.c.a. effect and was the best heterotic cross (37.9%) over better parent for grain yield.ThesisItem Open Access STUDIES ON THE EFFECT OF P.G.R. AND ETIOLATION ON PROPAGATION OF GUAVA(Birsa Agricultural University, 1988) Singh, Kamleshwar; Sinha, A.P.Kamleshwar singh The results obtained in this investigation suggest that for maximum success and subsequent establishment of rooted layers of guava in nursery application of IBA at 6,000 ppm are quite useful and economically best. There is no marked effect of etiolating on rooting in the case of guava.In order to find out a very conclusive result, these factors needs to be tried further in few more varieties seasons and number of times before recommending it for general use.ThesisItem Open Access EVALUATION OF INDIGENOUS MATERIALS AS PROTECTANTS OF PIGEON PEA AGAINST PULSE BEETLE(Birsa Agricultural University, 1988) SINGH, DEVI DAYAL; CHAND, PREMA potted plant experiment was conducted in soils. collected from eighteen different locations of Ranchi district of Bihar using moong as a test crop to study (1) the response of legumes to P application (11) the suitability of different chemical extract ants for prediction of P requirements of legumes. Results indicated significant response of moong crop to fertilizer phosphorus. Higher response was observed at higher dose of phosphorus (60 ppm P) in comparison to a lower dose (30 ppm P). Correlation coefficients were worked out between available P determined by different chemical extract ants and dry matter yield as well as P uptake. The Olsen and Bray P₁ extract ants were found to be superior to other extract ants. Results also indicated that available phosphorus in these soils increased with a rise in soil pH and organic carbon content. Correlation study between inorganic P fractions and available P estimated by Olsen & Bray P, method indicated that Al-bound 1 phosphorus contributed more in P nutrition of moong followed by solid bound and Fe-bound phosphorus.ThesisItem Open Access STUDIES ON CROP SEQUENCES AND THEIR EFFECT ON SOIL FERTILITY(Birsa Agricultural University, 1988) SAHAY, GOPALJI; THAKUR, R.A field experiment was conducted during 1985-86 in sandy clay loan soils at the experimental corn of Birsa Agricultural University, Ranchi to study the effect of cropping sequences on grain yield, net return and soil fertility. Maize among Kharif crops and maize-wheat rotation were the highest grain producer with maximum net return, benefit cost ratio and per day net return. Legume based crop rotations not only maintained the soil fertility but enriched organic carbon, available nitrogen, and phosphorus and potash status of the soil and also boosted up the grain yield of succeeding wheat crop. In spite of greater removal of potassium by crops than added by fertilization as indicated by negative balance, the K status of soil increased over initial value under all the cropping sequences. The most productive maize-wheat rotation removed 153.4 kg N, 24.5 kg P and 26.5 kg K ha which was significantly higher than the removal by other crop rotationsThesisItem Unknown RESPONSE OF WHEAT VARIETIES TO LEVELS OF FERTILIZER(Birsa Agricultural University, 1988) VERMA, KAUSHAL KISHORE; SINGH, S.N.An experiment to measure the "Response of wheat varieties to levels of fertilizers' was conducted at Birsa Agricul tural University Research Farm, Kanke, Ranchi - 6 during rabi season of 1986-87 in split plot design with four replications. Main plot treatments consisted of four levels of fertilizer viz; no fertilizer, 40 kg N 20 kg P20s + 13.3 kg K20, 80 kg N• 40 kg P205 26.6 kg K20 and 120 kg N 60 kg P0s + 40 kg K20 ha1 while sub-plot treatments consisted of four varieties viz., HI 1114, Sonalika, HD 2402 and UP 262. The soil of the experimental plot was sandy loan in texture, poor in fertility and acidic in reaction. Treatment variation in no way affected the emergence of plants. Fertilizer application significantly influenced the growth and yield attributing characters. Recommended levels of fertilizer were found significantly superior to rest of the levels. Best indices of all the growth and yield attributing characters were obtained with increasing levels of fertilizer application. Number of total tillers increased upto 60 DAS and that of leaf area index upto flowering and then gradually de creased with advancement in crop growth. CGR also increased with advancement of crop growth. Recommended level of fertilizer (120 kg N + 60 kg P20, + 40 kg K0 ha) produced significantly higher grain (40.98 ha-1) and straw (63.86 q ha-1) yields, net return (Ra.6284.50 ha) and net benefit/cost ratio (1.74) with more uptake of N (116.83 kg ha'), P (16.59 kg ha-1) and K (124.04 kg ha-1) as compared to the crop at lower levels of fertilizer. Varieties HI 1114 and HD 2402 being statistically similar to Sonalika gave significant higher grain yield than UP 262. HI 1114 also showed more uptake of nitrogen and phosphorus while all the varieties did not differ in respect to potassium uptake. In terms of net return (Rs ha) and net benefit/cost ratio all the varieties were equally good. Intractions between levels of fertilizer and varieties were not found significant in any character studied.ThesisItem Unknown PEST COMPLEX OF OKRA AS AFFECTED BY INSECTICIDAL SEED TREATMENT AND FOLIAR SPRAYS(Birsa Agricultural University, 1988) CHAKRAVARTY, MILAN KUMAR; PATHAK, S.N.Okar, being an important vegetable, grown exclusively in and around Ranchi for about three quarters of an year.It is attacked by a number of insect pests,mites namatodes during different growth stages. The major insect pests of okra in and around Ranchi include aphids(Aphis oossvpii Glow), Jassids (Amrasca biguttula biguttula ishida), Semilooper (Anomis flava Fabricius),and fruit borer (Earias fabia Stollalis). Field studies were made on the control of pest complex of okra as influenced by chemical seed treatment and need based foliar spray. Seed soaking with monocrotophos and quinalphos exhibited boosting effect on germination.The population of aphid was low in both monocrotophos and quinalphos seed treatments upto 45 days. All the sprays remained at per but they were better than the control against aphid. Seed soaking in monocrophos registered low jassid population up to 45 days. All the sprays remained at par but they were better than the control against aphin.Seed soaking in monocrotophos registered low jassid population up to 45 days. Lowest jassid population was observed with monocrotophos seed treatement followed by sprays of fevalerate. Aganst semilooper, all the insecticides were found to be affective. The lowest borer infested okra fruits was obtained with seed soaking in monocrotophos followed by need based sprays of fluvalinate. Higher number of fruits as well as yield were obtained in the treatement seed soaking in monocrotophos +need based spraying of monocrotophos.ThesisItem Unknown VARIABILITY STUDIES OF SOME PROMISING LINES OF SOYBEAN(Birsa Agricultural University, 1988) MAHTO, JAY LAL; HAIDER, Z.A.Forty soybean genotypes collected from different eco logical regions of the country were taken for the present investigation. Thirteen yield attributing parameters were considered for variability studies, correlation and path co-efficient analysis. Study on analysis of variance revealed significant differences for all the characters, except the leaf area. Plant height, leaf area, member of leaflets per plant, days to maturity, seed yield, number of pods per plant, number of seeds per plant and number of clusters per plant showed wide range of phenotypic variability. Leaf area, member of seeds per plant and number of pods per plant exhibited high genotypic and phenotypic co-efficient of variation. Though heritability in broad sense was high for all the parameters except the leaf area, the genetic advance in per cent of mean was high for member of pods per plant, plant height, and number of leaflets per plant, number of seeds per plant, number of clusters per plant, seed yield and primary branches. Correlation studies revealed that seed yield had strong positive association with member of seeds per plant, miner of clusters per plant, plant height, days to 50 per cent flowering and days to maturity both at genotypic and phenotypic levels. There was, however, weak positive association with member of pods per cluster at phenotypic level but it was strong at genotypic level, whereas 100 seed weight had weak positive correlation with seed yield at both the levels. Path co-efficient analysis revealed that number of pods per cluster, number of clusters per plant, number of seeds per plant, days to maturity and plant height had positive direct effect on seed yield. 100 seed weight, though, had highest direct positive effect but the indirect effect via mimber of seeds per pod and days to maturity was highly negative. Indi rect positive effects on seed yield via days to maturity, plant height, number of clusters per plant, number of seeds per plant and number of prosper cluster were also considerable. Present investigation, thus, indicates that number of clusters per plant, plant height and days to maturity may be considered in selection for increasing seed yield in soybean.ThesisItem Unknown MO-P INTERACTION IN RELATION TO NITROGEN FIXATION AND P- UTILIZATION BY GREEN GRAM IN RED LOAM SOIL OF CHOTANAGPUR(Birsa Agricultural University, 1988) Das, BanasriA pot experiment was conducted during summer and kharif 1987, to study the single and combined effect of phosphorus and molybdenum on nodulation, utilization of nitrogen, phosphorus and molybdenum and dry matter yield under lined and unlined conditions using green gram (Vignaradiata L.) as a test crop. The results indicated significant increase in the number and dry weight of nodules, nitrogen concentration and its uptake by nodules under lined condition with increasing levels of P and No. Significant effect of interaction between P x No on dry weight of nodules and nitrogen uptake by nodules were recorded and the best combination identified was 22 ppm P and 1 ppm Mo. The uptake of nitrogen, phosphorus and molybdenum by green gran increased significantly under limed condition with increasing levels of P and Mo. The uptake of these plant nutrients at 22 ppm P and 1 ppm Mo were higher than that at lower levels of P and Mo. The concentration of nitrogen, phosphorus and molybdenum in shoot was also influenced by P, Mo and lime application, Dry matter yield of green grin increased significantly with increasing levels of P and Ho. The availability of phosphorus in soil was positively influenced by the application of Ho, P and 1ime. Correlation studies indicated that number, dry weight and nitrogen content of nodules increased significantly nitrogen uptake, dry matter yield of green gran and available P content of post harvest soil.ThesisItem Unknown INFLUENCE OF CUTTING MANAGEMENT AND METHODS OF SOWING ON FORAGE PRODUCTION AND SEED YIELD OF BERSEEM(Birsa Agricultural University, 1988) choubey, Shiromani; Prasad, K.Forage production and seed yield of berseem was reviewed in relation to cutting management and methods of Bowing. It was assumed that the sufficient seed production in berseem might be dependent number of green forage cut. It was also assumed that the line sowing of berseem might be suitable for higher forage-cum-seed production. With this hypothesis keeping in view, a field experiment was conducted during Rabi 1986-87 at Fodder Farm, Birsa Agricultural University, Kanke, Ranchi. Berseem crop was raised under combinations of four methods of seeding (M. M2, M3 and M4) and five cutting managements (Co. C1,C2, C3, and C4) in randomized block design with three replications. The findings clearly revealed that the berseem crop did well under broadcast method of sowing (M,) in respect of plant density, number of branches, plant height, number of flower heads, green forage, dry matter, seed production and straw yield. Among line sowing, 20 cm row distance (M) was found to be better than 30 or 40 cm in respect of most of the growth and development parameters. Similarly, treatment having four cuts (C) enhanced total green herbage, dry matter production, germination percentage, organic carbon and total N content of soils in comparison to no cutting (C0), one cutting (c1) and two cutting (C2) management. Treatment combination C2 M3, proved to be more remunerative than other combinations but for maximum seed yield of berseem treatment combination C2,M3, was found to be the most suitable.
