scholarly journals Control of Colorado Potato Beetle, 1997A

1998 ◽  
Vol 23 (1) ◽  
pp. 127-127
Author(s):  
Craig A. Longtine ◽  
David W. Ragsdale ◽  
Edward B. Radcliffe
Keyword(s):  
Colorado Potato Beetle ◽  
Potato Field ◽  
Plant Spacing ◽  
Single Treatment ◽  
Randomized Design ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Completely Randomized Design ◽  
Direct Counts ◽  
Flat Fan Nozzle

Abstract This trial was located in a non-irrigated commercial potato field near Hollandale in southern Minnesota. Plots consisted of a single treatment row 25 ft in length bordered on each side by two untreated guard rows. Plant spacing was 36 inches between rows and 12 inches between plants within rows. Treatments were replicated four times in a completely randomized design. Treatments were applied with a CO2-pressurized backpack sprayer fitted with a single Teejet 8003-E flat-fan nozzle delivering 40 gpa/acre at 35 psi. All treatments were applied on 2 Jul. Spraying conditions were windy, but winds were constant. In evaluating the treatments, direct counts of early instars (first and second) and late instars (third and fourth) were made on every plant in each plot on 3 Jul. The data were subjected to analyses of variance following log10(x +1) transformation.

scholarly journals Control of Colorado Potato Beetle, 1997B

1998 ◽  
Vol 23 (1) ◽  
pp. 128-128
Author(s):  
Craig A. Longtine ◽  
Edward B. Radcliffe ◽  
David W. Ragsdale
Keyword(s):  
Plant Spacing ◽  
University Of Minnesota ◽  
Single Treatment ◽  
Population Densities ◽  
Randomized Design ◽  
Potato Beetle ◽  
Completely Randomized Design ◽  
The University ◽  
Over The Top ◽  
Direct Counts

Abstract Potatoes were planted 20 May at the University of Minnesota Agricultural Experi-ment Station, Rosemount, MN. Plots consisted of a single treatment row 30 feet in length with 10 feet of untreated potatoes between plots within rows. Plant spacing was 36 inches between rows and 12 inches between plants within rows. Treatments were arranged in a completely randomized design with 4 replications. Treated rows were separated by one row of untreated potatoes. Admire 2F was applied over the top of the potato pieces just before the furrows were covered. Foliar applications were made on 15 Jul with a CO2-pressurized sprayer fitted with a Teejet 8003-E flat-fan nozzle delivering 40 gpa at 35 psi. CPB population densities were determined by counting larvae on every plant in each plot on 16 Jul. In evaluating the treatments, direct counts of early instars (first and second) or late instars (third and fourth) were recorded. Analyses of variance was performed on data after log10(x +1) transformation.

scholarly journals Colorado Potato Beetle Control on Potatoes With Microbial Insecticides, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 143-143
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
Donna Baumann
Keyword(s):  
Colorado Potato Beetle ◽  
Rating Scale ◽  
Compressed Air ◽  
Loamy Sand ◽  
Single Treatment ◽  
Row Crop ◽  
Potato Beetle ◽  
Direct Counts

Abstract ‘ Red Norland’ potatoes were planted in 20 foot rows on 29 Mar, ’95. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a RCB design with 4 replications. The soil is a Norfolk “A” loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gallacre at 30 psi. Treatments were applied 19 and 24 May and 4 Jun. Plots were treated with Asana XL 0.05 Ib (AI)/acre and PBO 8EC 0.375 Ib (AI)/acre on 9 and 19 Jun to control Colorado potato beetle adults. In evaluating the treatments, direct counts of the number of CPB adults, larvae, and egg masses110 plants and % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 26 Jun from 20 feet of row.

scholarly journals Colorado Potato Beetle Control on Potatoes with In-Furrow Treatments, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 115-115
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
John Nottingham
Keyword(s):  
Colorado Potato Beetle ◽  
Rating Scale ◽  
Block Design ◽  
Compressed Air ◽  
Single Treatment ◽  
Egg Masses ◽  
Row Crop ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Direct Counts

Abstract ‘Kennebec’ potatoes were planted in 20 foot rows on 25 Apr, ‘94. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A" loamy sand. Initial furrow treatments were applied to the seed at the rate of 20 gal per acre with a small watering can. Admire foliar treatments were applied at a rate of 50 gal per acre on 8, 23 and 29 Jun with a custom built compressed air row crop sprayer with each row being covered by 6 drop nozzles delivering 50 gal/acre at 30 psi. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 20 Jul from 20-ft of row.

scholarly journals Control of Resistant Colorado Potato Beetle in Early Market Potato, Big Lake, Mn, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 115-115
Author(s):  
David Noetzle ◽  
Jennifer Miller
Keyword(s):  
Colorado Potato Beetle ◽  
Block Design ◽  
Potato Field ◽  
Synthetic Materials ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Row Width ◽  
Randomized Complete Block Design ◽  
The Individual ◽  
Early Market

Abstract Continued failure of most insecticides for control of CPB in the Anoka Sand Plains growing area stimulated further comparisons of biologicals, inorganics, and synthetic materials for CPB management. Soils are sands at this location. Plots were established in an irrigated commercial potato field. The individual plot consisted of 4—25 ft rows with a row width of 3 ft. Treatments were arranged in a randomized complete block design and were replicated 4 times. The grower treated all of the field, including the plots, with Thiodan and Asana XL at 1.0 lb and 0.5 lb Al/acre respectively on 8 Jul and 16 Jul. Plot treatments were applied on 25 Jun, 6 and 19 Jul using a CO2 hand sprayer with about 20 gals total material/acre and 40 psi pressure. Larval ratings and defoliation estimates were taken on 6 and 19 Jul. Vines were killed on 3 Aug and yields collected on 18 Aug. The center 2 rows of each plot were harvested for yield.

scholarly journals Control of Resistant Colorado Potato Beetle, Big Lake, Mn, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 146-146
Author(s):  
David M. Noetzel ◽  
Jennifer Miller
Keyword(s):  
Colorado Potato Beetle ◽  
Potato Field ◽  
Total Material ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Field Plots ◽  
Very High

Abstract A trial was established in an irrigated commercial potato field adjacent to a commercial planting of a NatureMark NewLeafⓇ field. Plots were 4-36 inch rows by 25’ in length. Treatments were arranged in a RCB and replicated 4 times. Treatments were applied on 8 & 26 June and 8 July using a CO2 hand held sprayer. Total material per acre was approximately 20 gal applied using 40 psi. CPB populations were very high at this site and late readings are confused by non-random feeding. Yields were not taken.

scholarly journals Colorado Potato Beetle Control on Potatoes with Foliar Insecticide Sprays, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 117-117
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
John Nottingham
Keyword(s):  
Colorado Potato Beetle ◽  
Rating Scale ◽  
Block Design ◽  
Single Treatment ◽  
Row Crop ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Control Adult ◽  
Insecticide Sprays ◽  
Direct Counts

Abstract ‘Kennebec’ potatoes were planted in 20 foot rows on 11 Apr, ‘93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gal/acre at 30 psi. Treatments were applied 1, 9, 21 and 29 Jun. On 21 and 29 Jun, Kryocide and Novodor plots were sprayed with Asana XL 0.05 lb Al/acre and PBO 8EC 0.375 lb Al/acre to control adult Colorado Potato Beetle. Abamectin plots were treated with Asana XL 0.05 lb Al/acre and PBO 8EC 0.375 lb Al/acre on 21 Jun to control adult CPB. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae, egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 8 Jul from 20 feet of row.

scholarly journals Colorado Potato Beetle Control on Potatoes With Foliar Insecticide Sprays, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 153-153
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Donna Baumann ◽  
Carol Cain ◽  
Melanie Boltz
Keyword(s):  
Colorado Potato Beetle ◽  
Compressed Air ◽  
Loamy Sand ◽  
Single Treatment ◽  
Egg Masses ◽  
Row Crop ◽  
Potato Beetle ◽  
Insecticide Sprays ◽  
Direct Counts

Abstract ‘Red Norland’ potatoes were planted in 20 foot rows on 8 Apr, ‘96. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a RCB design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gpa at 30 psi. Treatments were applied 26 May. Novodor plots were sprayed 24 and 26 May. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae, egg masses/10 plants and the % defoliation were recorded. Yields were taken on 28 Jun from 20 feet of row.

scholarly journals Uji efektivitas kombinasi pupuk bio-slurry dengan pupuk npk terhadap pertumbuhan dan produksi dua varietas padi sawah (oryza sativa L.)

2018 ◽  
Vol 2 (2) ◽  
pp. 188
Author(s):  
Ahmad Khanafi ◽  
Yafizham Yafizham ◽  
Didik Wisnu Widjajanto
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Production Data ◽  
Single Treatment ◽  
Randomized Design ◽  
Npk Fertilizer ◽  
Completely Randomized Design ◽  
Fertilizer Combination ◽  
Range Test

The objective of this research was to investigate the effectiveness of combination of bio-slurry fertilizer and NPK fertilizer on the growth and production of two varieties of rice. The experiment was assigned in a completely randomized design of factorial pattern. The first factor was the combination of bio-slurry and NPK fertilizer that consisted of P0 = no added fertilizer (control) 0 ton/ha, P1 = NPK fertilizer 550 kg/ha (165 kg N, 33 kg P, 45 kg K); P2 = bio-slurryfertilizer 2.3 tons/ha (45 kg N, 14 kg P, 23 kg K) and NPK fertilizer 400 kg/ha (120 kg N, 24 kg P, 32 kg K); P3 = bio-slurryfertilizer 4.6 tons/ha (90 kg N, 28 kg P, 46 kg K) and NPK fertilizer 250 kg/ha (75 kg N, 15 kg P, 20 kg K); P4 = bio-slurry fertilizer 5.9 tons/ha (115 kg N, 36 kg P, 59 kg K) and NPK fertilizer 100 kg/ha (30 kg N, 6 kg P, 8 kg K); and P5 = bio-slurryfertilizer 8.5 tons/ha (165 kg N, 52 kg P, 85 kg K). The second factor was varieties of rice that consisted of V1 : IR-64 and V2 : Ciherang. Each treatment was repeated three times. Parameters observed were plant height, number of tillers, weight of 1.000 grains, and rice production. Data were analyzed using ANOVA and continued with Duncan’s Multiple Range Test (DMRT). The results showed that the combination of bio-slurry fertilizer and NPK fertilizer were significantlyaffect (p <0.05)all observation parameters, while varieties of wetland rice did not show significant effect on all observation parameters (p<0.05). The application of bio-slurry fertilizer in single treatment or in either combination with NPK fertilizer had the same result with the treatment of NPK fertilizer on the growth and yield of rice. Keywords: rice, fertilizer combination, bio-slurry fertilizer, NPK fertilizer

scholarly journals PERTUMBUHAN DAN HASIL TANAMAN OKRA (Abelmoschus esculentus) YANG DIBERI BOKASHI KAYAMBANG (Salvinia molesta) DAN PUPUK FOSFOR PADA TANAH GAMBUT PEDALAMAN (Growth and Yield of Okra (Abelmoschus esculentus) by Applying of Bokashi Kayambang (Salvinia molesta

AgriPeat ◽  
2019 ◽  
Vol 18 (02) ◽  
pp. 91-97
Author(s):  
Journal Journal
Keyword(s):  
Plant Height ◽  
Peat Soil ◽  
Abelmoschus Esculentus ◽  
Growth And Yield ◽  
Single Treatment ◽  
Phosphorus Fertilizer ◽  
Salvinia Molesta ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT This study aimed to determine the effect of bokashi kayambang (Salvinia molesta) and Phosphorus Fertilizer on Peat Soil on growth and yield of okra (Abelmoschus esculentus). This study was conducted in October 2012-March 2013 at Jl. Lais II, Bukit Tunggal, Jekan Raya, Palangka Raya. This study used a completely randomized design (CRD) with two factor factorial treatment. The first factor was Applying of Bokashi Kayambang(K) consisting of 5 levels, namely: K0 = 0 t.ha-1, K1 = 2,5 t.ha-1, K2 = 5,0 t.ha-1, K3 = 7,5 t.ha-1, K4 = 10 t.ha-1. The second factor was the provision of phosporus fertilizer (P) which consist of 5 levels, namely: P0 = 0 kg.ha-1, P1 = 150 kg.ha-1, P2 = 200 kg.ha-1, P3 = 250 kg.ha-1, P4 = 300 kg.ha-1, so there are 25 combinations of treatment and repeated three times so that there are 75 units experiment. The result showed that interaction of bokashi kayambang dose 2,5 t.ha-1 and without phosphorus fertilizer were giving the best effect for the average of plant height at the age of 1 WAP. The interaction of bokashi kayambang dose 2,5 t.ha-1 and phosphorus fertilizer 300 kg.ha-1 were giving the best effect for the average of plant height at the age of 6 WAP.The single treatment of bokashi kayambang dose 2,5 t.ha-1was the best effect for the average of plant height at the age 5 WAP and harvest weight. The single treatment of phosphorus fertilizer dose 300 kg.ha-1was the best effect for the harvest weight . Keywords: okra, bokashi kayambang, phosporus, peat soil. ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh bokashi kayambang (Salvinia molesta) dan pupuk fosfor pada tanah gambut terhadap pertumbuhan dan hasil okra (Abelmoschus esculentus). Penelitian ini dilakukan pada bulan Oktober 2012-Maret 2013 di Jl. Lais II, Bukit Tunggal, Jekan Raya, Palangka Raya. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan dua faktor perlakuan faktorial. Faktor pertama adalah pemberian bokashi kayambang (K) yang terdiri dari 5 tingkat, yaitu: K0 = 0 t.ha-1, K1 = 2,5 t.ha-1, K2 = 5,0 t.ha-1, K3 = 7,5 t.ha-1, K4 = 10 t.ha-1. Faktor kedua adalah pemberian pupuk Fosfor (P) yang terdiri dari 5 tingkat, yaitu: P0 = 0 kg.ha-1, P1 = 150 kg.ha-1, P2 = 200 kg.ha-1, P3 = 250 Kg.ha-1, P4 = 300 kg.ha-1, jadi ada 25 kombinasi perlakuan dan diulang tiga kali sehingga ada 75 unit percobaan. Hasil penelitian menunjukkan bahwa terdapat interaksi pemberian bokashi kayambang dan pupuk fosfor terhadap pertumbuhan tinggi tanaman okra umur 1 dan 6 mst. Pemberian pupuk fosfor 300 kg.ha-1 tanpa bokashi kayambang memberikan pengaruh yang terbaik terhadap tinggi tanaman okra pada umur 1 mst. Sedangkan pemberian bokashi kayambang dosis 2,5 t.ha-1 dan pupuk fosfor 300 kg.ha-1 memberikan pengaruh yang terbaik terhadap tinggi tanaman okra pada umur 6 mst. Pemberian bokashi kayambang dosis 2,5 t.ha-1 memberikan pengaruh yang terbaik untuk terhadap tinggi tanaman umur 5 mst dan bobot panen. Sedangkan pemberian pupuk fosfor dosis 300 kg.ha-1 memberikan pengaruh yang terbaik terhadap bobot panen buah muda tanaman okra. Kata kunci: okra, bokashi kayambang, fosfor, tanah gambut.

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