Navy Beans at the MicroFarm

Planting Envoy and Cargo Navy Beans marks the first MicroFarm collaboration with Heinz-Watties. We are grateful to them for supplying the seed and to Te Mata Contractors for paddock preparation and planting.

TeMataContractors planting Navy Beans
TeMataContractors planting Navy Beans

In Paddock 3, planting was started before rain on 17 December. A heavy shower put paid to work for the day with sticky soil building up on the planter. It also caused soil crusting over the cultivated area, including the first planting passes.
Planting was restarted on 18 December. The soil was dry enough on the surface for the planter to run, but wet underneath so we ended up with significant compaction. It was notable that a rougher surface was left when planting into the drying soil, but there was no noticeable soil crusting after planting.

In Paddock 4, planting was completed on 18 December with the same effect as Paddock 3. The paddock was split with Envoy planted next to the centre access track and Cargo along the northern boundary. Target population was 275,000 plants/hectare

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Four Cosio cover cloth plots were laid out after planting, two on each of the varieties.

Cosio cover cloth laid on emerging navy beans
Cosio cover cloth laid on emerging navy beans

Emergence counts

Emergence Counts 24/12/2014
Covered Plot Row #/m Uncovered Plot Row #/m
Envoy 1 1 13 1 1 9
Envoy 1 2 11 1 2 10
Envoy 1 3 12 1 3 9
Envoy 1 4 10 1 4 12
Cargo 2 1 10 2 1 13
Cargo 2 2 12 2 2 6
Cargo 2 3 12 2 3 11
Cargo 2 4 12 2 4 15
Envoy 3 1 10 3 1 10
Envoy 3 2 9 3 2 10
Envoy 3 3 11 3 3 11
Envoy 3 4 9 3 4 9
Cargo 4 1 13 4 1 12
Cargo 4 2 11 4 2 7
Cargo 4 3 11 4 3 10
Cargo 4 4 11 4 4 10

ANOVA shows no significant difference between the varieties or covered versus uncovered plots.

At 11 plants/metre of row at 0.508m centres, the population is 216,535 plants/hectare or 79% emergence.

The emergence was checked again two days later. Notable was that a number of plants had their growing tips nipped out. The data showing emergence minus shoots with no tips are shown below.

Emergence Counts 26/12/2014
Covered Plot Row #/m Uncovered Plot Row #/m
Envoy 1 1 9 1 1 9
Envoy 1 2 7 1 2 9
Envoy 1 3 12 1 3 10
Envoy 1 4 8 1 4 9
Cargo 2 1 14 2 1 9
Cargo 2 2 10 2 2 12
Cargo 2 3 9 2 3 12
Cargo 2 4 14 2 4 14
Envoy 3 1 9 3 1 8
Envoy 3 2 8 3 2 9
Envoy 3 3 10 3 3 8
Envoy 3 4 8 3 4 7
Cargo 4 1 10 4 1 12
Cargo 4 2 13 4 2 9
Cargo 4 3 12 4 3 14
Cargo 4 4 11 4 4 9

ANOVA shows no significant difference between covered versus uncovered plots but a definite difference between varieties. Envoy population was 173,000/ha and Cargo population 225,800/ha. The probability that the difference is due to chance is less than 0.5%.

A final emergence count was made 17 days after planting.
The emergence was checked again two days later. Notable was that a number of plants had their growing tips nipped out. The data showing emergence minus shoots with no tips are shown below.

Emergence Counts 03/01/2015
Covered Plot Row #/m Uncovered Plot Row #/m
Envoy 1 1 13 1 1 10
Envoy 1 2 10 1 2 10
Envoy 1 3 12 1 3 10
Envoy 1 4 11 1 4 12
Cargo 2 1 11 2 1 14
Cargo 2 2 15 2 2 13
Cargo 2 3 13 2 3 13
Cargo 2 4 13 2 4 15
Envoy 3 1 10 3 1 9
Envoy 3 2 10 3 2 10
Envoy 3 3 12 3 3 10
Envoy 3 4 13 3 4 10
Cargo 4 1 14 4 1 11
Cargo 4 2 13 4 2 12
Cargo 4 3 13 4 3 14
Cargo 4 4 13 4 4 10

ANOVA shows that when all data are combined, there is no significant difference between covered and uncovered plots. However, there is a significant difference between covered versus uncovered plots for Envoy, with the probability that the difference is due to chance being less than 5%. There is no significant difference between covered and uncovered plots for the Cargo variety (p=0.65).

There is a definite difference between varieties. Envoy population was 214,570/ha and Cargo population 257,880/ha. The probability that the difference is due to chance is less than 1%.

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