EFFECT OF RHIZOBIUM, CROP RESIDUES AND INORGANIC FERTILIZERS ON GROWTH AND YIELD OF BLACKGRAM

Abstract

The experiment was conducted in the Farm ofSher-e-Bangla Agricultural University, Dhaka. Bangladesh during the period from March to May 2007 to study the effect of Rhco/nwn, crop residues and inorganic fertilizers on yield contributing characters of blackgram. The treatments of the experiment were T i: No I?hs:o/n,un. No organic, No chemical fertilizer (control). T': No RJu:ohiw,, ± No organic No Nitrogen + PK. T: N411 ± PK. 'I: 1d?1:0be11;n •" PK. 17 5 : Ithizobiwn PK, Ii. lthcobiwn + Crop residues -t 4 PlC. 'F6 : Crop residues N2 • PK and T: Crop Residues + N40 i PK. The tallest plant (55.25 cm) was recorded from T7 and ihe shortest plant (45.67 cm) was recorded from Ii. The highest seed yield (1,41 t ha") as recorded from T7 and the lowest (0.72 i ha") was recorded from T,. The highest stoer yield (1.88 t hi') was found from T, and the Io'est (0.94 t h ad) was recorded from T, The maximum concentration of N (3.12%) was recorded from 1 7 and the minimum (2.(9110) was recorded from T.I .The maximum concentration of P (0.615%) was found from T. while the minimum (0.3261 .'%) was recorded from Ti. The maximum concentration of K in plant (0.706%) was recorded from T 7 and the minimum (0.370%) was recorded from •F,. The maximum concentration of S (0.79%) was recorded from Tg and the minimum 0,391 1 o) \as recorded in l'. The maximum concentration of N in seed (5.36%) was recorded from T, and the minimum (4.34%) sas recorded from Ti. 'treatment 'I' s gave the maximum concentration of P in seed (0.544%). while T, (control) gave the minimum (0.290%). The maximuni concentration of' K (0.549%) 'sas recorded from 1'7 and the nhinimuiti (0.324%) was recorded from T 1 . The maximum concentration of S in seed (0.29%) was recorded from T 7 and the nlinimuni (0.39%) was recorded from Ti. The maximum N uptake by plant (40.50 kg ha) was Ibund in T and the minimum (20.35 kg ha' t ) was recorded from 1',. The maximum P uptake by plant (4.43 kg ha") was recorded from T, while the minimum (2.90 kg ha' was recorded from 1 2.

The maximum K uptake by plant 19.88 kg hi) was obtained from T7 and the minimum (8.06 kg ha") was recorded from T 2 . The maximum S uptake by plant (9.32 kg ha") was recorded front Ti and the minimum (4.68 kg ha") was recorded from T1 . The maximum N uptake by seed (89.71 kg ha") was recorded from T7 and the minimum (45.49 kg ha") was recorded from Ti. The maximum P uptake by seed (12.97 kg ha") was found from T, while the minimum (10.09 kg ha') was recorded from T.. The maximum K uptake b' seed (30.24 kg hi') was recorded from Ts and the minimum (.06 kg ha") was recorded from '1?. The maximum S uptake by seed (3.73 kg ha') was recorded from Ts and the minimum (2.53 kg ha") vas recorded from Ti.