Influence of Organic Manures and Rock Phosphate Combined With Feldspar on Growth, Yield and Yield Components of Bean (Phaseolus vulgaris L.)

Abstract

The work was carried out at Sids Horticulture Research Station, Beni-Sueif Governorate during the two successive fall seasons of 2011and 2012 to study the effect of organic manures, i.e., sheep manure ,farmyard manure and mixture between of both them ( a mixture at 1:1) at the levels of 10 and 20 m 3 /fed in presence of fertilization with rock phosphate and feldspar rates viz., (15P 2 O 5 + 25K 2 O , 30P 2 O 5 + 50K 2 O and 45P 2 O 5 + 75K 2 O) kg/fed on plant growth, total chlorophyll in leaves, protein and fiber percentage in green pods, green pod and dry seed yields and their components as well as chemical constituents in dry seeds of common bean cv. "Bronco"Results showed that the application of organic manures had no significant effect on plant height and leaves total chlorophyll during the two growing seasons. Sheep manure produced higher number of branches, protein percentage in green pods, pod length, number of seeds per pod and seed contents of phosphorus and potassium in the two growing seasons, Also, it increased leaf area in the second season, nitrogen and protein percentage of dry seeds in the first season. Also, farmyard manure improved fiber percentage in the two seasons. Whereas, applying sheep manure + farmyard manure significantly increased plant dry weight, diameter and weight of green pods, green pod yield , number of pods per plant, weight of 100-seeds and dry seed yield during the two growing seasons. Also, it gave the highest dry pod weight and weight of seeds per pod in the first season.Organic manure level at 20 m 3 /fed resulted in the highest of all plant growth characters, leaves contents of chlorophyll, protein percentage in green pods, green pods and seed yields and their components as well as dry seed contents of nitrogen, protein, phosphorus and potassium during the two growing seasons. On the other hand, organic manure level at the rate of 10 m 3 /fed increased fiber percentage in green pods in the two growing seasons.Fertilization with rock phosphate and feldspar with high rate ( 45P 2 O 5 + 75K 2 O kg/fed) markedly increased plant height, number of branches, leaf area, protein and fiber percentage in green pods and seed contents of nitrogen, protein, phosphorus and potassium during the two growing seasons. Plant dry weight, total chlorophyll in leaves, green pod and dry seed yields and their components were significantly increased with rock phosphate combined with feldspar at 30P 2 O 5 + 50 K 2 O kg /fed during the two growing seasons.It may be recommended to fertilize common bean cv. "Bronco" with sheep manure + farmyard manure at the rate of 20 m 3 /fed (from total mixed) and rock phosphate combined with feldspar at the rate of 30P 2 O 5 + 50K 2 O kg /fed , to produce high green pod, dry seed yields and their components.