ฉันรักแปลAn experiment was conducte

ฉันรักแปลAn experiment was conducted at the Asian Institute of Technology, Thailand, for 54 days to investigateon the effect of pond water filtration and aggregates (hydroponic substrates) on lettuce (Lactuca sativaL.) production, nutrient uptake and growth. A 2×3 factorial experiment consisting of 2 filtration regimes(unfiltered versus partially filtered pond water) and 3 aggregates (styrofoam as control, sand, and gravel).The hydroponic units were placed on a bamboo platform across the pond surface. An earthen pond(226m2) was stocked with 8000 hybrid catfish with an average initial weight of 6.58±1.72 g. The fishwere fed with commercial pelleted feeds containing 30% crude protein. Twenty-one days old lettuceseedlings were transplanted on to hydroponic units after stocking catfish for 4 months in the pond. Pondwater was partially filtered by using a settling tank and filtration tank, which contained netting materialsto trap solids. Lettuce plots were irrigated twice daily at 0800 and 1600 h using either filtered or unfilteredpond water for 45 min.The highest head weight and yield of lettuce were observed with plants grown on the sand mediafollowed by gravel and the control treatments. Partially filtered pond water treatments had significantlyhigher lettuce yield (P < 0.05) and filtration increased lettuce yield of the control, gravel and sand treatmentsby 87, 63 and 52%, respectively, over unfiltered water treatments. Lettuce grown on gravel andthe filtered water control treatments had adequate tissue N content. Nutrient rich hybrid catfish (Clariasmacrocephalus×Clarias gariepinus) pond water provides an opportunity to use it in the hydroponicvegetable production.Although pond water is mainly constrained by the high suspended solids, and low dissolved oxygen,the study showed that filtration of catfish pond water enhanced the potential to use it for the hydroponiclettuce production.© 2010 Elsevier B.V. All rights reserved.1. IntroductionHybrid catfish (Clarias macrocephalus×Clarias gariepinus) iswidely cultured in earthen ponds in Southeast Asia at stocking densitiesas high as 30–100 fishm−2 by using various feedstuffs suchas pelleted feed, trash fish, poultry processing wastes and rice bran(Areerat, 1987; Little et al., 1994; Lan, 1999). The feeding behaviorof this air-breathing catfish results in accumulation of feed, fecal,and excretory wastes in pond water (Mires et al., 1990; Schwartzand Boyd, 1994; Cathcart et al., 1999; Lan, 1999; Yi et al., 2003;Porrello et al., 2005). This nutrient rich catfish effluent providesan opportunity to use it as a fertilizer supplement in agriculture.Wood et al. (2001) reported that when fish pond effluent was usedfor irrigation of wheat, it was possible to harvest 2140–5790 kg∗ Corresponding

I love translating An Experiment was Conducted at The Asian Institute of Technology, Thailand, for 54 days to investigate on The Effect of Water Pond FILTRATION and Aggregates (Hydroponic substrates) on lettuce (Lactuca sativa L.) production, nutrient uptake and growth. A. 2 × 3 factorial Experiment consisting of 2 FILTRATION regimes (Unfiltered Versus partially filtered Pond Water) and 3 Aggregates (Styrofoam As Control, Sand, and Gravel). The Hydroponic units were Placed on a Bamboo platform Across The Pond surface. An earthen Pond (. 226m2) was stocked with 8000 HYBRID Catfish with an Average Initial Weight of 6:58 ± 1.72 G. The Fish were Fed with Commercial pelleted feeds containing 30% Crude protein. Twenty-One days Old lettuce seedlings were transplanted on to Hydroponic units After stocking Catfish for. 4 months in The Pond. Pond Water was partially filtered by using a settling tank and FILTRATION tank, which Contained Netting materials to Trap solids. Lettuce Irrigated plots were Twice Daily at 0800 and the 1600th h using either filtered or Unfiltered Water Pond for 45 min. The Highest Head Weight and yield of lettuce were observed with Plants Grown on The Sand Media followed by Gravel and The Control Treatments. Partially filtered Pond Water Treatments had significantly Higher lettuce yield (P <twelve five a.m.) and FILTRATION increased lettuce yield of The Control, Gravel. and Sand Treatments by 87, 63 and 52%, respectively, over Unfiltered Water Treatments. Lettuce Grown on Gravel and The filtered Water Control Treatments had adequate Tissue N content. Nutrient rich HYBRID Catfish (Clarias macrocephalus × Clarias gariepinus) Pond Water provides an Opportunity. to Use it in The Hydroponic Vegetable production. Although Pond Water is mainly constrained by The High Suspended solids, and Low Dissolved Oxygen, The Study showed that FILTRATION of Catfish Pond Water Enhanced The Potential to Use it for The Hydroponic lettuce production. © in 2010 Elsevier. BV All rights reserved. 1. Introduction Hybrid Catfish (Clarias macrocephalus × Clarias gariepinus) is widely Cultured in earthen Ponds in Southeast Asia at stocking densities As High As Fishm 30-100-2 by using Various feedstuffs Such As pelleted Feed, Trash Fish,. Poultry processing wastes and Rice Bran (Areerat, in 1987; Little et AL., 1994; Lan, 1,999th). The feeding behavior of this Air-Breathing Catfish results in accumulation of Feed, fecal, and excretory wastes in Pond Water (Mires et AL. ., in 1990; Schwartz and Boyd, 1994; Cathcart et AL., 1,999th; Lan, one thousand nine hundred ninety-nine; Yi et AL., 2003rd; Porrello et AL., 2,005). This nutrient rich Catfish effluent provides an Opportunity to Use it As a fertilizer. Supplement in Agriculture. Wood et AL. (2001) Reported When Fish Pond effluent that was Used for Irrigation of Wheat, it was possible to Harvest 2140 to 5,790 kg * Corresponding.

I love translation

An experiment was conducted at the Asian Institute, of Technology Thailand for 54, days to investigate
on the. Effect of pond water filtration and aggregates (hydroponic substrates) on lettuce (Lactuca sativa
L.) production nutrient,, Uptake and growth. A 2 × 3 factorial experiment consisting of 2 filtration regimes
.(unfiltered versus partially filtered pond water) and 3 aggregates (styrofoam as, and sand control, gravel).
The hydroponic. Units were placed on a bamboo platform across the pond surface. An earthen pond
(226m2) was stocked with 8000 hybrid catfish. With an average initial weight of 6.58 edge 1.72 G. The fish
were fed with commercial pelleted feeds containing 30% crude protein.Twenty-one days old lettuce
seedlings were transplanted on to hydroponic units after stocking catfish for 4 months in the. Pond. Pond
water was partially filtered by using a settling tank and filtration tank which contained, netting materials
to. Trap solids. Lettuce plots were irrigated twice daily at 0800 and 1600 h using either filtered or unfiltered
pond water. For 45 min.
.The highest head weight and yield of lettuce were observed with plants grown on the sand media
followed by gravel and the. Control treatments. Partially filtered pond water treatments had significantly
higher lettuce yield (P < 0.05) and filtration. Increased lettuce yield of, the control gravel and sand treatments
by 87 63 and, 52% respectively over unfiltered water,,, Treatments.Lettuce grown on gravel and
the filtered water control treatments had adequate tissue N content. Nutrient rich hybrid catfish. (Clarias
macrocephalus × Clarias gariepinus) pond water provides an opportunity to use it in the hydroponic
vegetable production.
Although. Pond water is mainly constrained by the high, suspended solids and low, dissolved oxygen
.The study showed that filtration of catfish pond water enhanced the potential to use it for the hydroponic
lettuce production.
s 2010 Elsevier. B.V. All rights reserved.

1. Introduction Hybrid catfish (Clarias macrocephalus × Clarias gariepinus) is
widely cultured in. Earthen ponds in Southeast Asia at stocking densities
as high as 30 - 100 fishm − 2 by using various feedstuffs such
as pelleted. Feed.Trash fish poultry processing, wastes and rice bran
(Areerat 1987; Little, et al, 1994; Lan 1999). The, feeding behavior
of. This air-breathing catfish results in accumulation, of feed fecal
and, excretory wastes in pond water (Mires et al, 1990;? Schwartz
and, Boyd 1994; Cathcart et al, 1999; Lan 1999; Yi, et al, 2003;
Porrello et al, 2005). This nutrient rich catfish. Effluent provides
.An opportunity to use it as a fertilizer supplement in agriculture.
Wood et al. (2001) reported that when fish pond effluent. Was used
for irrigation, of wheat it was possible to harvest 2140 - 5790 kg
∗ Corresponding.