Page 4 - ผลของโดโลไมท์ ปุ๋ยอินทรีย์ และไตรโคเดอร์มาต่อความอุดมสมบูรณ์ของดินและผลผลิตของพริกไทย Effects of dolomite, organic fertilizers and Trichaderma spp. On soil fertility and pepper yield were investigated

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4

Abstract

The study on effects of dolomite, organic fertilizers and Trichoderma spp. on soil
fertility and pepper yield were investigated. Was carried out in the area of farmers Thung

Benja Sub-district, Tha Mai District, Chanthaburi Province From January 2018 to September
2020 in the group of soil series 45, Nong Khla soil series (Nok) to study the change in soil
chemical properties under various soil management methods. And to study the effect of
soil amendment material on growth and yield of pepper. The experiment was planned by

randomized complete block design (RCBD), 3 repetitions, 8 methods, consisting of
1) control plots, 2) chemical fertilizers based on soil analysis values, 3) 2 tons of compost
per rai, together with chemical fertilizers based on soil analysis values 4) fertilizer. 2 tons
per rai of fermentation with Trichoderma spp. and chemical fertilizers according to soil

analysis value 5) 2 tons of compost per rai in combination with super Ldd. 3 and chemical
fertilizers Soil analysis cost 6) 4 tons of compost per rai with chemical fertilizers based on
soil analysis values 7) 4 tons of compost per rai with Trichoderma spp. and chemical

fertilizers based on soil analysis values 8) 4 tons of compost per rai in combination with
super Ldd. 3 and chemical fertilizers based on soil analysis values The results of the
experiment showed that After soil management by various methods The chemical
properties of the soil changed from the previous with an average pH of 5. After the end of
the experiment, the average pH of the soil increased. The mean value was between 5.4-

5.7. The organic matter accumulated in the soil changed between 1.8-2.2 percent.
Composting at the rate of 2 tons per rai together with the Trichoderma spp.. And chemical
fertilizers according to soil analysis values The highest amount of phosphorus in soil was

106.3 milligram per kilogram. And the use of compost at the rate of 4 tons per rai in
conjunction with the Trichoderma spp. And chemical fertilizers according to soil analysis
values The highest content of potassium, calcium and magnesium in soil was 173.3, 454.3
and 80.7 milligram per kilogram, respectively, for compost application. Trichoderma spp.

Super Ldd.3 and chemical fertilizers according to soil analysis values In various forms There
were no statistical differences in pepper yields. By using compost at the rate of 2 tons per
rai in conjunction with the Trichoderma spp. And chemical fertilizers according to soil
analysis values Resulting in a yield of 3,786.7 kg of pepper per rai While the control field

yielded pepper at 2,713.3 kilograms per rai. In terms of economic returns above variable
costs, there was no difference.