Table 2.

Controls for pollination bagging treatments in the field experiment

F- and P-values are from one-way ANOVAs (yield parameter~bagging treatment). Plant pots in both pollination treatments (bagged and open) had 25 mm holes in their base, through which a cane was driven into the ground. Two 200 mm plant support rings were fitted onto each cane, over which exclusion bags were fitted, or plants were left uncovered for open pollination. For the hand-pollination controls, only results of maximally hand-pollinated nodes were included in mean estimation, three plants were excluded as they had no flowers suitable for hand-pollination.

Control method	Yield parameter	Mean ±SE		n	ANOVA test
		Open	Bagged		F-value	P-value
Plants either open or bagged within a pollinator exclusion cage measuring 2.5 × 2.5 × 2 m for duration of field pollination treatment.	Yield mass (g) per plant	6.7 ± 1.5	8.9 ± 1.4	32	1.088	0.305
	Bean number per plant	12.2 ± 2.8	13.6 ± 2.6	32	0.129	0.721
	Harvest index per plant	0.64 ± 0.14	0.77 ± 0.11	32	0.582	0.451
Randomized block of eight open and eight bagged control plants at each field site for duration of field pollination treatment. Subset of open flowers hand-pollinated with Buzz pollen on two separate occasions for each flower.	Yield mass (g) per node per plant	1.7 ± 0.3	2.5 ± 0.6	29	1.339	0.257
	Bean number per node per plant	4.2 ± 0.7	4.5 ± 1.0	29	0.038	0.846