สืบค้นงานวิจัย
Carbon and Nutrients stock in mature rubber plantations with and without control of under flora
Joshua Abraham - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Carbon and Nutrients stock in mature rubber plantations with and without control of under flora
ผู้แต่ง / หัวหน้าโครงการ (EN): Joshua Abraham
บทคัดย่อ (EN): Though rubber (Hevea brasiliensis) has its origin in the Amzonian forests, its plantations worldwide are monoculture in nature. The under flora is rigorously managed in the immature phases of rubber cultivation. A case study was carried out to compare the stock of carbon and nutrients in the under flora of mature rubber plantations where its growth was controlled and not controlled. The study was carried out in Pathampuzha village near Palai in Kerala. Eight fields in each category viz., with and without control of under flora were selected and stock of carbon and nutrients in soils (0-45 cm) and in above ground flora were estimated. RRII 105 was the clone in all the fields and planting was carried out during 1990-1996 period. The cover crop Mucuna bracteata was established in all the fields during the initial stages. As the canopy of rubber trees crossed over, the cover crop faded out and other weeds dominated. In eight of the sixteen fields studied, weeding was regularly carried out to control the under flora while in the other eight fields weeding was restricted to narrow strips in the platform, for the tapping personnel to move around. Soil samples were collected from three depths viz., 0-15, 15-30 and 15-45 cm using soil cores and gravel (>2mm) and fine earths (<2mm) were estimated Five sets of samples were collected from each depth in each field. The stocks of organic carbon (OC) and nutrients viz., total nitrogen (TN) , available forms of potassium (K), calcium (Ca), magnesium (Mg), zinc (Zn) and copper (Cu) in soils (0-45 cm) were estimated. Above ground biomass of the under flora in each field was estimated by physically removing the above ground portions of the under flora from five sites, each of 1 m2 area from each field. The samples were estimated for C, TN, P, K, Ca, Mg, Zn and Cu contents and the amount of each nutrient locked in the above ground flora was calculated. It was noticed that in fields where under flora was not controlled for about ten years, there was significant improvement in the stock of OC, TN, K and Mg in soil. The above ground biomass was obviously much more in fields where under flora was not controlled. In these fields significantly higher amounts of C, N, P, K, Ca, Mg, Zn and Cu were also noticed in the above ground biomass of under flora. A management practice by which the C and nutrients build up in soil as well as in above ground under flora in mature rubber plantations is of great significance environmentally and agriculturally.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): nutrients
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

Joshua Abraham. "Carbon and Nutrients stock in mature rubber plantations with and without control of under flora". ไม่ระบุหน่วยงาน. ม.ป.ป.

Joshua Abraham. "Carbon and Nutrients stock in mature rubber plantations with and without control of under flora". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



TARR Wordcloud:
Carbon and Nutrients stock in mature rubber plantations with and without control of under flora
Joshua Abraham
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
High Density Planting in Rubber Plantations COCOA : A POTENTIAL INTERCROP FOR MATURE RUBBER An Integrated Method for the Management of White Root Disease in Rubber Plantations in Sri Lanka New Diseases Reported and Maladies Reached Epidemic Proportions in Rubber Plantations Since late 20th Century Mechanised Agronomic Practices in Rubber Plantations – Indian Scenario Growths and Carbon Stocks of Para Rubber Plantations on Phonpisai Soil Series in Northeastern Thailand FORESTATION WITH RUBBER FOR CARBON MARKETS; YIELD TABLES UNDER SRI LANKAN CONDITIONS Conversion of Lignocellulosic Material in Rubber Unused Plant Part EFFECT OF SLOW RELEASE FERTILIZER ON THREE-WHORL POLYBAG RUBBER PLANTING BROWN ROOT DISEASE ON RUBBER, RIRST OUTBREACK AND IT’S CONTROL IN VIETNAM
คัดลอก URL
กระทู้ของฉัน
ผลการสืบค้นทั้งหมด โพสต์     เรียงลำดับจาก
พัฒนาระบบโดยศูนย์ความรู้เฉพาะด้านวิศวกรรมความรู้และวิศวกรรมภาษาDeveloped by Center of Excellence for Unified Knowledge and Language Engineering
สนับสนุนโดยสำนักงานพัฒนาการวิจัยการเกษตร (องค์การมหาชน)Supported by the Agricultural Research Development Agency (Public Organization)
แบบสำรวจความพึงพอใจQuestionair