2020 Holt peanuts on red soil – Bundaberg
Grower: Ken Bird, Department of Agriculture and Fisheries. The block being monitored is a small trial block involving soybeans for grain and green manure, peanuts, multispecies planting and bare fallow. 6 rows of each crop/treatment are planted in each block of the trial, with 4 replicate blocks in total.
Location: Bundaberg Research Facility, Kalkie Bundaberg
Area: 1.8 ha small trial plot, irrigated, black soil
- Paddocks were worked with a ripper and limed with 2.5 t/ha of fine agricultural lime before spreading the fertiliser over the top and incorporating into soil to make small beds
- Approximately 263 kg/ha of Legume Max fertiliser applied pre-planting.
- 4 February 2020 – ‘Holt’ peanuts were sown into double-row beds and inoculated with group P peanut inoculant by water injection using an electric drive precision planter.
- Planting rate was 180 000 seeds/ha
- Pre-emergent herbicide application of Valor with knock-down herbicide Spray.Seed were applied at label rates before plant emergence.
- Some issues are occurring due to the large amount of rainfall in the Bundaberg region. The peanuts are struggling particularly in the low lying areas of the paddock to emerge.
- A large percentage of the peanuts have finally germinated after a week of drier weather.
- The plants are growing well and are looking green and healthy.
- Rapid growth is occurring as a result of the warm, humid weather and a good soil moisture profile.
- Green, healthy and growing well.
- The rainfall events over the last week had left them somewhat swimming but the hot humid days of late have helped dry the paddock out a little bit.
- No signs of disease or pest issues as of yet.
- Peanuts are growing well.
- There are some flowers appearing.
- No obvious issues with disease or pests at the stage.
First flowers emerging.
- Overall health of plants is generally good.
- Peg development is starting to occur.
- In previous weeks Spinnaker was applied at label rates to control weeds and the effects are now showing on susceptible weed species.
- A few leaves were observed to have symptoms that resemble leaf spot, but this is to be confirmed. No applications of chlorothalonil have been made yet for peanut protection.
- Amistar Xtra is proposed to be applied early next week in the peanuts, as well as dimethoate and salt to control growing numbers of jassids.
- Moisture levels are good, there is no need for irrigation at this time.
Possible leaf disease has been observed. Diagnosis to be confirmed.
- Plants are growing vigorously with a little bit of humid weather around. For the most part they are green and healthy, there is a small amount of leaf yellowing in some areas.
- There is a small amount of vine weeds growing in the peanut bed but the interrow is relatively clean.
- Plants are beginning to peg down and flowers are continuing to come out.
Some vine weeds in the row.
- Warmer weather during the day is allowing peanuts to continue powering on.
- There is a small amount of leaf yellowing occurring in some areas of the block. Initially thought to be a nutrition issue, the yellowing has been attributed to jassids.
- Last week the crop was sprayed with Bravo Weatherstik to help prevent leaf diseases and Bacchus to control moderate populations of small heliothis.
- Irrigation is scheduled for this week to increase soil moisture levels.
Leaf yellowing due to jassids.