Đất xám (đất cát) và đất nông nghiệp quan trọng ở tỉnh Tây Ninh và Được sử dụng cho gạo dựa trên hệ thống cây trồng nào có cây trồng ở vùng cao (ví dụ, ngô) giai đoạn. A Người vô dụng đánh giá của đất xám của khu vực Đông Nam (Phụ lục 2, Six Báo cáo hàng tháng, tháng 10 năm 2008) xác định các contraintes lớn các chất hữu cơ thấp, thấp khả năng giữ nước, chất dinh dưỡng khả năng sinh sản thấp (đặc biệt là P và K), nhỏ gọn và xu thế để Xu hướng Để Hãy cứng thiết. | 009 06 VIE Completion Report 2009 Attachment 1 009 06 VIE Improving capability of provincial extensionists for assessing soil constraints to sustainable production through the use of the SCAMP decision support system. SOIL CONSTRAINTS AND MANAGEMENT PRACTICES FOR AN UPLAND RICE-BASED CROPPING SYSTEM ON A SANDY SOIL 1. Introduction Acrisols sandy soils are important agricultural soils in Tay Ninh Province and are used for rice-based cropping systems which have an upland crop . maize phase. A SCAMP assessment of the Acrisols of the South East Region Attachment 2 Third Six Monthly Report October 2008 identified the major constraints to be low organic matter low water holding capacity low nutrient fertility particularly P and K tendency to compact and tendency to be hard-setting. Impeded drainage leading to waterlogging and ponding of water was a common problem. Local farmer practice in Tay Ninh Province for maize production involves a blanket application of N applied as ammonium sulfate and P as single superphosphate in the absence of any soil test information. Coconut ash is also added as a nutrient source mainly K and is considered to improve soil porosity. The aim of this field study was to undertake a demonstration field experiment on an Acrisol in Tay Ninh Province. Treatments were based on a SCAMP assessment of the soil and compared with a treatment comprising local farmer practice. 2. Materials and Methods . Location The field experiment was carried out at Phuoc Dong Commune Go Dau District Tay Ninh Province southern Vietnam. . Duration The experiment was conducted from 01st December 2008 to 10th Feb 2009 . Maize variety Short duration 75-80 days Wax 44 variety of table maize was used as a test crop. . Soil constraints and experimental treatments The test soil belongs to the Acrisol soil group FAO UNESCO soil classification system . Some characteristics of the soil are listed in Table 1. The soil is a sandy loam with 66 sand. The nutrient .
