Sử dụng Compost trong hệ thống Làm Vườn Trồng trọt. thu hoạch diện tích cho 25 loại rau tươi và dưa hấu được lựa chọn là ha ở Hoa Kỳ vào năm 1997 (USDA, 1998). Diện tích 10 chế biến rau quả gia tăng thêm ha. Giá trị sản xuất cho 25 thị trường rau quả tươi và 10 loại cây trồng chế biến đạt 9,27 tỷ USD trong năm 1997 (USDA, 1998). Sản xuất rau phải được coi là sử dụng lý tưởng cho phân hữu cơ vì hầu hết các loại cây trồng được trồng trong. | Section II Utilization of Compost in Horticultural Cropping Systems 2001 by CRC Press LLC CHAPTER 5 Compost Effects on Crop Growth and Yield in Commercial Vegetable Cropping Systems Nancy E. Roe CONTENTS I. Introduction II. Compost Research for Vegetable Cropping Systems A. Corn B. Cruciferous Crops C. Cucurbits D. Legumes E. Solanaceous Crops F. Other Crops III. Conclusions References I. INTRODUCTION Harvested acreage for 25 selected fresh vegetables and melons was 748 677 ha in the United States in 1997 USDA 1998 . Acreage of 10 processing vegetables added an additional 574 660 ha. The value of production for these 25 fresh market vegetables and 10 processing crops totaled billion in 1997 USDA 1998 . Vegetable production should constitute an ideal use for compost since most crops are grown in annual systems that have a high profit potential. Impediments to the utilization of compost in these intensive production systems include compost costs transportation costs lack of adequate application equipment and lack of clear and consistent demonstration of compost benefits to plant growth yield and profits. 2001 by CRC Press LLC Research projects in the . and other countries have focused on the use of composts from materials that are readily available in large quantities in the local area. Due to the high bulk density of most composts local availability is critical for practical and economical usage. In many . vegetable crop production areas such as south Florida the proximity of large human populations provides an opportunity for production of composts from municipal wastes. In others such as parts of North Carolina and the high plains of Texas large numbers of confined animal feeding operations produce animal manures that can be composted. Feedstocks for composts evaluated on vegetable crops include mixed municipal solid waste MSW sewage sludge biosolids yard trimmings wood chips animal manures food processing byproducts and other agricultural wastes. Each
