EFFECT OF PHOSPHORUS AND POTASSIUM ON THE GROWTH, YIELD AND NUTRIENTS CONTENT OF BRRI DHAN33

Abstract

An experiment was conducted at the Research Field of the Shcr-e-lIanda Aericultural ( Jniversitv, Dhaka 1207 during the period horn July 2012 to December 2012 to stud the effect of' phosphorus and potass i urn in the field regarding on growth. v icld and nutrients content of B RRI dhaii3 .3 tinder the A 1.2-28. The present study consisted of two treatments of' potassium fertilizer (K Soil application of K2Sth (a: 20 kg ha and 1<2: Foliar application ot' K1SO.1 â ID kg ha 1 and live plrnsphortis levels including control (l': without (control). P2: Soil application :a 30 kg I' ha'. P;: Soil application : 40 kg P It'. P4: lolkw application 'a 15 kg P ha -' -and Ps: Fohiar application (d 20 kg P ha ). 'l'he experiment as laid out in L\o factors RCI3D riiethiod with three replications where the nieuns were adjudged by DMR F at 5% level of probability. All the studied traits were significantly affected by the singly or interaction ellèct of both P and K ICrtilizers except plant height at 90 DAT d tic to the ehiUct of' K. and plant height at 90 I )A I and han'est. leaf length at 90 D1V I and pan ide length while treatment P and K pertbrnied the best as sing ly or their interaction .,A s a result. the tallest plant (I 10. 10 and I 08.30 cm). max i mum leaves (45.30 and 39.09 plant-'), maximum etlCcrive tillers (14. I 3 and I I .79 hill ). longest panicle (22.46 and 2 1.39 cut), maximum tilled grain 1141.6 and 129.5 panicle 5. lugher eighi of 1000-grain (31.24 and 29.66 u). higher grain ielcl (5.39 and 4.85 t ha '). higher straw ield (8.74 and 8.11) t ha '), higher biological yield (14.11 and 13.03 t ha ') and lughest harvest index (38.17 and 37.08%) were obtained by the treatment P and Ki. respectively at harvest. Situ i lair results were also obtained in their interact ion eflCct such as P,Kj produced shin i lican t lv the tallest plant (110.80 cm). maximum leaves (47.30 plain'), maximum eliective tillers (14.83 lull '), maximum filled grain (141.3 panicle 5. higher weight of 1000-grain (31.97 g). higher grain ield (5.59 t ha 5. higher straw '. ield (8.95 t ha 5. Ii igher biological yield (I 1.5 1 t ha ) and Ii ighest harvest i ides (38.50%). Siini lark. lu gher K and S contents in straw was ibund Ii igher ( I .883 and 0.0970/o. respect ivelv ) in P, and another content by grain and sLrav were statistical I) identical among the all treatments of phosphorus due to its non sign i licant variation wli ile K j obtained the higher content of N. P. K and S by grain (67.04. 13.40. 12.87 and 5.030 kg ha. respectively) and straw (52.12.5.910. 131.60 and 7.059 kg ha. respectively) comparativels than that of K1 titie to the cllict oh' potassium fertilizer. Interaction effect between I' and K. treatment PX f had high Is sign i licant than other i nteraetioits regarding to K and S contents in straw ( 1.881 and 0.097%, respectively) w 11 Ic rest of the nutrient content by grain and straw were statist cal Is identical among ii te interact ion treatments due to it non significant variation.