ALLEY CROPPING RICE (ORYZA-SATIVA VAR BARAFITA) WITH CASSIA (CASSIA-SIAMEA) - SOIL FERTILITY AND CROP PRODUCTION

被引：7

作者：

DANSO, AA ^{[1
]}

MORGAN, P ^{[1
]}

机构：

[1] UNIV IDAHO,COLL FORESTRY WILDLIFE & RANGE SCI,MOSCOW,ID 83843

来源：

AGROFORESTRY SYSTEMS | 1993年 / 21卷 / 02期

关键词：

CROP YIELD; HEDGEROW PROXIMITY; THE GAMBIA; AGROFORESTRY; N; P; K; ORGANIC MATTER;

D O I：

10.1007/BF00705226

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Rice grain weight and quality (weight of larger size fractions), soil pH, and N, P, K and organic matter content were studied where rice was alley cropped with cassia on a semi-arid site in The Gambia. The four treatments, control (no cassia prunings or inorganic fertilizer added), only prunings added, prunings plus half the recommended fertilizer rate and prunings plus full recommended rate of fertilizer, were applied in a Latin square design with 10 X 8 m plots, each sub-divided into two 4-m wide alleys. Fertilizer was applied twice; full rates were 93.7 kg/ha NPK (8:24:24) plus 32.4 kg/ha urea followed two weeks later by 100 kg/ha urea applied as side dressing. Soil samples collected before and after cropping at 0-10 cm and 10-15 cm depths and cassia pruning samples were analyzed for pH, N, P, K and organic matter content. Our results do not show significant benefit of cassia prunings applied as mulch to grain weight or quality in alley cropping rice with cassia. The addition of inorganic fertilizer plus cassia prunings did not increase rice grain and straw weights (p = 0.3447 and p = 0.0691, respectively) compared to the control and prunings only treatments. In all treatments, the outer rows, those within 80 cm of hedgerows, produced significantly less grain (p = 0.0002) and straw than inner rows. Neither the larger grade A nor the smaller grade B grain weights were significantly different (p = 0.6017 and p = 0.0629, respectively) between treatments. Weight of grain, straw, and larger grade A and smaller grade B quality grain did not differ significantly for inner and outer rows (p = 0.6329, p = 0.7148, p = 0.7171 and p = 1.000, respectively).

引用

页码：147 / 158

页数：12

共 29 条

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